This week Harvard's president Claudine Gay resigned "after conservative activists revealed she had plagiarized," writes Business Insider, adding that hedge fund manager/prominent Harvard donor Bill Ackman "helped lead the charge."

Then Business Insider "analyzed Ackman's wife's doctoral dissertation and found numerous instances of plagiarism." In most cases Ackman's wife put the author's name and publication date immediately after the material which she used — but did not put quotation marks around it. But according to the Business Insider, "At least 15 passages from her 2010 MIT doctoral dissertation were lifted without any citation from Wikipedia entries." Her husband, Ackman, has taken a hardline stance on plagiarism. On Wednesday, responding to news that Gay is set to remain a part of Harvard's faculty after she resigned as president, he wrote on X that Gay should be fired completely due to "serious plagiarism issues... Students are forced to withdraw for much less," Ackman continued. "Rewarding her with a highly paid faculty position sets a very bad precedent for academic integrity at Harvard."
Ackman's wife was a tenured MIT professor from 2017 to 2021, according to the article. "It is unfortunate that my actions to address problems in higher education have led to these attacks on my family," Ackman posted Friday night on Twitter.

Then Ackman threatened "a review of the work of all current MIT faculty members. We will begin with a review of the work of all current MIT faculty members, President Kornbluth, other officers of the Corporation, and its board members for plagiarism."

Business Insider notes that Ackman "has been vocal about wanting to see MIT's president, Sally Kornbluth, fired since Kornbluth testified on December 5 in front of a congressional panel examining how university presidents handled student protests against Israel's war in Gaza. Kornbluth said in her opening statement that she didn't support 'speech codes' that would restrict what students say during protests."

New submitter axlash writes: It has been reported on X that Niklaus Wirth, inventor and co-inventor of several languages including Pascal, Euler and Oberon, died on Jan 1, 2024. He was aged 89. "We lost a titan of programming languages, programming methodology, software engineering and hardware design," writes software engineer Bertrand Meyer in a post on X. "Niklaus Wirth passed away on the first of January. We mourn a pioneer, colleague, mentor and friend."

Niklaus Wirth, born on February 15, 1934, in Switzerland, is a renowned computer scientist known for his significant contributions to the field of computer science and software engineering. He is best known for developing several programming languages, including ALGOL W, Pascal, and Modula-2, which have had a profound impact on the design and development of modern computer software. Wirth's work emphasized simplicity, clarity, and efficiency in programming languages, which greatly influenced subsequent language design and the development of structured programming techniques. His legacy also includes the development of the Oberon programming language and the design of the Oberon operating system. Wirth's dedication to elegant and efficient software design continues to inspire computer scientists and software engineers worldwide, making him a highly respected figure in the history of computing.

You can learn more about Wirth via A.M. Turing Award, Britannica, and the Computer History Museum.

An anonymous reader quotes a report from The Guardian: Microsoft's MS-DOS (and its IBM-branded counterpart, PC DOS) eventually became software juggernauts, powering the vast majority of PCs throughout the '80s and serving as the underpinnings of Windows throughout the '90s. But the software had humble beginnings, as we've detailed in our history of the IBM PC and elsewhere. It began in mid-1980 as QDOS, or "Quick and Dirty Operating System," the work of developer Tim Paterson at a company called Seattle Computer Products (SCP). It was later renamed 86-DOS, after the Intel 8086 processor, and this was the version that Microsoft licensed and eventually purchased.

Last week, Internet Archive user f15sim discovered and uploaded a new-old version of 86-DOS to the Internet Archive. Version 0.1-C of 86-DOS is available for download here and can be run using the SIMH emulator; before this, the earliest extant version of 86-DOS was version 0.34, also uploaded by f15sim. This version of 86-DOS is rudimentary even by the standards of early-'80s-era DOS builds and includes just a handful of utilities, a text-based chess game, and documentation for said chess game. But as early as it is, it remains essentially recognizable as the DOS that would go on to take over the entire PC business. If you're just interested in screenshots, some have been posted by user NTDEV on the site that used to be Twitter.

According to the version history available on Wikipedia, this build of 86-DOS would date back to roughly August of 1980, shortly after it lost the "QDOS" moniker. By late 1980, SCP was sharing version 0.3x of the software with Microsoft, and by early 1981, it was being developed as the primary operating system of the then-secret IBM Personal Computer. By the middle of 1981, roughly a year after 86-DOS began life as QDOS, Microsoft had purchased the software outright and renamed it MS-DOS. Microsoft and IBM continued to co-develop MS-DOS for many years; the version IBM licensed and sold on its PCs was called PC DOS, though for most of their history the two products were identical. Microsoft also retained the ability to license the software to other computer manufacturers as MS-DOS, which contributed to the rise of a market of mostly interoperable PC clones. The PC market as we know it today still more or less resembles the PC-compatible market of the mid-to-late 1980s, albeit with dramatically faster and more capable components.

reg writes: Twenty-five years ago today, CmdrTaco innocently posted a story entitled "Collection of Fun Video Clips" in the days of T1 lines and invited anyone with the bandwidth to check it out. Even though the term "Slashdot Effect" had already been coined, this was the first time it took down a site. The site owner got a personal call from their ISP, which was later reported in the comments, where he also noted that he was writing a novella called "She Hates My Futon." Many old timers started reading that, although it's never been finished, despite having a Good Reads page, a Facebook page, and several promises that he'll complete it.

"The events of 2023 showed that A.I. doesn't need to be that good in order to do damage," argues novelist Lincoln Michel in the New Republic: This March, news broke that the latest artificial intelligence models could pass the LSAT, SAT, and AP exams. It sparked another round of A.I. panic. The machines, it seemed, were already at peak human ability. Around that time, I conducted my own, more modest test. I asked a couple of A.I. programs to "write a six-word story about baby shoes," riffing on the famous (if apocryphal) Hemingway story. They failed but not in the way I expected. Bard gave me five words, and ChatGPT produced eight. I tried again, specifying "exactly six words," and received eight and then four words. What did it mean that A.I. could best top-tier lawyers yet fail preschool math?

A year since the launch of ChatGPT, I wonder if the answer isn't just what it seems: A.I. is simultaneously impressive and pretty dumb. Maybe not as dumb as the NFT apes or Zuckerberg's Metaverse cubicle simulator, which Silicon Valley also promised would revolutionize all aspects of life. But at least half-dumb. One day A.I. passes the bar exam, and the next, lawyers are being fined for citing A.I.-invented laws. One second it's "the end of writing," the next it's recommending recipes for "mosquito-repellant roast potatoes." At best, A.I. is a mixed bag. (Since "artificial intelligence" is an intentionally vague term, I should specify I'm discussing "generative A.I." programs like ChatGPT and MidJourney that create text, images, and audio. Credit where credit is due: Branding unthinking, error-prone algorithms as "artificial intelligence" was a brilliant marketing coup)....

The legal questions will be settled in court, and the discourse tends to get bogged down in semantic debates about "plagiarism" and "originality," but the essential truth of A.I. is clear: The largest corporations on earth ripped off generations of artists without permission or compensation to produce programs meant to rip us off even more. I believe A.I. defenders know this is unethical, which is why they distract us with fan fiction about the future. If A.I. is the key to a gleaming utopia or else robot-induced extinction, what does it matter if a few poets and painters got bilked along the way? It's possible a souped-up Microsoft Clippy will morph into SkyNet in a couple of years. It's also possible the technology plateaus, like how self-driving cars are perpetually a few years away from taking over our roads. Even if the technology advances, A.I. costs lots of money, and once investors stop subsidizing its use, A.I. — or at least quality A.I. — may prove cost-prohibitive for most tasks....

A year into ChatGPT, I'm less concerned A.I. will replace human artists anytime soon. Some enjoy using A.I. themselves, but I'm not sure many want to consume (much less pay for) A.I. "art" generated by others. The much-hyped A.I.-authored books have been flops, and few readers are flocking to websites that pivoted to A.I. Last month, Sports Illustrated was so embarrassed by a report they published A.I. articles that they apologized and promised to investigate. Say what you want about NFTs, but at least people were willing to pay for them.
"A.I. can write book reviews no one reads of A.I. novels no one buys, generate playlists no one listens to of A.I. songs no one hears, and create A.I. images no one looks at for websites no one visits.

"This seems to be the future A.I. promises. Endless content generated by robots, enjoyed by no one, clogging up everything, and wasting everyone's time."

Roy Longbottom worked for the U.K. covernment's Central Computer Agency from 1960 to 1993, and "from 1972 to 2022 I produced and ran computer benchmarking and stress testing programs..." Known as the official design authority for the Whetstone benchmark), Longbottom writes that "In 2019 (aged 84), I was recruited as a voluntary member of Raspberry Pi pre-release Alpha testing team."

And this week — now at age 87 — Longbottom has created a web page titled "Cray 1 supercomputer performance comparisons with home computers, phones and tablets." And one statistic really captures the impact of our decades of technological progress.

"In 1978, the Cray 1 supercomputer cost $7 Million, weighed 10,500 pounds and had a 115 kilowatt power supply. It was, by far, the fastest computer in the world. The Raspberry Pi costs around $70 (CPU board, case, power supply, SD card), weighs a few ounces, uses a 5 watt power supply and is more than 4.5 times faster than the Cray 1."


Thanks to long-time Slashdot reader bobdevine for sharing the link.

They create a dedicated desktop icon for your favorite web-based application — a simplified browser that opens to that single URL. Yet while Linux usually offers the same functionality as other operating systems, "Peppermint OS's Ice and its successor Kumo are the only free software versions of Site-Specific Browsers available on Linux," according to Linux magazine.

"Fortunately for those who want this functionality, Peppermint OS is a Debian derivative, and both can be installed on Debian and most other derivatives." Since SSBs first appeared in 2005, they have been available on both Windows and macOS. On Linux, however, the availability has come and gone. On Linux, Firefox once had an SSB mode, but it was discontinued in 2020 on the grounds that it had multiple bugs that were time-consuming to fix and there was "little to no perceived user benefit to the feature." Similarly, Chromium once had a basic SSB menu item, Create Application Shortcut, which no longer appears in recent versions. As for GNOME Web's (Epiphany's) Install Site as Web Application, while it still appears in the menu, it is no longer functional. Today, Linux users who want to try SSBs have no choices except Ice or Kumo.

Neither Ice or Kumo appears in any repository except Peppermint OS's. But because Peppermint OS installs packages from Debian 12 ("bookworm"), either can be installed to Debian or a derivative... To install successfully, at least one of Firefox, Chrome, Chromium, or Vivaldi also must be installed... Because both Ice and Kumo are written in Python, they can be run on any desktop.
The article concludes that Site-Specific Browsers might make more sense "on a network or in a business where their isolation provides another layer of security. Or perhaps the time for SSBs is past and there's a reason browsers have tried to implement them, and then discarded them."

CNN describes them as "towering waves," driven into California's coastline by powerful storms and "posing a significant risk to people and structures along the coast."

Monstrous, 20-foot-plus waves on Thursday crashed over seawalls and swept away and injured several people, forced rescues and sent a damaging surge of water through coastal California streets.

Dangerous waves continued to slam the coast on Friday, forcing beaches to close. All Ventura County beaches will be closed through New Year's Eve because of the 15- to 20-foot waves expected along the central and Southern California coasts through Saturday evening... Sea levels have risen along most of the California coastline over the past century, NOAA data shows, as global temperatures climb and melt glaciers and ice sheets. Higher sea levels are making coastal flooding events worse and will continue to do so in the future.

The first round of dangerous waves hit alongside high tide Thursday morning. Several people were injured by a huge wave that slammed into Pierpont in the Ventura Beach area... Nearly 20 people were briefly swept away in the incident and eight people were taken to the hospital, Ventura officials said.
One bystander even filmed what CNN calls a"monster" wave, "the surge sweeping people and vehicles down the street... The massive waves pummeling the coastline, reeking havoc, flooding streets and businesses."

CNN's report also includes footage from nearly 300 miles north, showing a wave flooding a beachfront restaurant's courtyard in Santa Cruz, California. ("I just feel bad for the restaurants," says one local. "I know they just went through renovations from the last time this happened.") CNN's original article notes the sheriff's office there briefly issued an evacuation warning for some areas for part of Thursday, including one "where seawater filled beachside roadways and pushed against some homes, CNN affiliate KION reported."

And CNN's video report concludes by noting that "Parts of the California coast could see towering waves through the weekend, coastal flood and high surf alerts stretching from the southern border to the Bay Area."

"Predating even Toy Story, ReBoot was the first 3D animated television show," writes longtime Slashdot reader sandbagger, sharing a new report from Global News. "The master tapes have been located in storage but the hardware needed to play the 1990s-era media has yet to be located." From the report: Produced in Vancouver by Mainframe Entertainment, it aired on YTV between 1994 and 2001, and decades later still has a committed fan base. Among those super fans are Jacob Weldon and Raquel Lin, a B.C. duo now crafting a documentary about the creation of the show and its impact in the film and TV world. Weldon said he wants to see ReBoot recognized for its place in the evolution of computer animation -- recognition he said it rarely gets.

When ReBoot was finally cancelled -- cut short in its fourth and final season -- its protagonists were left in peril and the show ended on a cliffhanger. It's another factor that Lin and Weldon say has helped immortalize the show and has helped fans hoping for a revival that might finally explain the characters' fate. Earlier this month, the documentary also got a potential major boost. Mainframe allowed Lin and Weldon to come to the studio to look for the show's original master tapes, recordings some believed might have been permanently lost. They struck gold. "They had boxes upon boxes upon boxes, hundreds of tapes," Lin said. "It's original resolution, original frame rate, uncompressed. If we could get a deck to play these, they would look beautiful," Weldon said.

Finding that deck, however, is the pair's next major challenge. The recordings are on a rare digital tape format called D1, a technology that Weldon said was cutting edge and rare when Mainframe was using it. It's even harder to find today, and even Mainframe doesn't have the equipment to play the tapes back. Weldon and Lin have since put out a call on social media for a working Bosch BTS D1 deck that would allow them to play the tapes, and incorporate them into their documentary. "I can't tell you how many people have called us, DM'd us, emailed us -- people from all over the world," Lin said. While the pair still haven't secured the deck, they're aiming to release their documentary by next summer. They're hoping it will help renew interest in the show, introduce it to new generations and perhaps see it get new life on a streaming platform.

theodp writes: Among the 45 winners of this year's Education Innovation and Research (EIR) program competitions is Creative Coders: Middle School CS Pathways Through Game Design (PDF). The U.S. Dept. of Education is providing the national nonprofit Urban Arts with $3,999,988 to "use materials and learning from its School of Interactive Arts program to create an engaging, game-based, middle school CS course using [Microsoft] Minecraft tools" for 3,450 middle schoolers (6th-8th grades) in New York and California with the help of "our industry partner Microsoft with the utilization of Minecraft Education."

From Urban Arts' winning proposal: "Because a large majority of children play video games regularly, teaching CS through video game design exemplifies CRT [Culturally Responsive Teaching], which has been linked to 'academic achievement, improved attendance, [and] greater interest in school.' The video game Minecraft has over 173 million users worldwide and is extremely popular with students at the middle school level; the Minecraft Education workspace we utilize in the Creative Coders curriculum is a familiar platform to any player of the original game. By leveraging students' personal interests and their existing 'funds of knowledge', we believe Creative Coders is likely to increase student participation and engagement."

Speaking of UA's EIR grant partner Microsoft, Urban Arts' Board of Directors includes Josh Reynolds, the Director of Modern Workplace for Microsoft Education, whose Urban Arts bio notes "has led some of the largest game-based learning activations worldwide with Minecraft." Urban Arts' Gaming Pathways Educational Advisory Board includes Reynolds and Microsoft Sr. Account Executive Amy Brandt. And in his 2019 book Tools and Weapons, Microsoft President Brad Smith cited $50 million K-12 CS pledges made to Ivanka Trump by Microsoft and other Tech Giants as the key to getting Donald Trump to sign a $1 billion, five-year presidential order (PDF) "to ensure that federal funding from the Department of Education helps advance [K-12] computer science," including via EIR program grants.

"Millions of Star Wars fans get nostalgia pangs during the holiday season," reports the Washington Post, "when they are accustomed to seeing broadcasts of their beloved movies.... FX, now owned by Disney, has multiple Star Wars marathons on tap this month, including a marathon on December 23 and 24." The program-planning director at Disney's Freedom channel even calls Star Wars a "Christmas-adjacent" franchise.

And now, long-time Slashdot reader H_Fisher writes... Call it a Life Day miracle, even if nobody was asking for it. YouTube historian and retro-tech enthusiast Perifractic uploaded a restored, mostly-complete 4K upscale of the "infamous" Star Wars Holiday Special to his channel on Wednesday. From the video summary: "Using Topaz Labs [Video AI] with a few other techniques we've meticulously upscaled & restored the infamous Star Wars Holiday Special to 5120x3840, with stereo elements, to the best quality the technology currently allows."

Jokingly labeling the resulting file "5K" (8K video height, but tagged "4K" by YouTube due to its original 4:3 aspect ratio), the upscaled version unfortunately (or fortunately, depending on your point of view) replaces some songs and omits some segments that were flagged by YouTube's copyright watchdog.

Longtime Slashdot reader Kreuzfeld writes: Help please: here in Lawrence, Kansas, the public school district has recently started using Gaggle (source may be paywalled; alternative source), a system for monitoring all digital documents and communications created by students on school-provided devices. Unsurprisingly, the system inundates employees with false 'alerts' but the district nonetheless hails this pervasive, dystopic surveillance system as a great success. What useful advice can readers here offer regarding successful methods to get public officials to backtrack from a policy so corrosive to liberty, trust, and digital freedoms?

He specified the JSON notation, and developed tools like JSLint and the minifier JSMin. His Wikipedia entry says he was also a senior JavaScript architect at PayPal — but he's probably better known for writing O'Reilly's book JavaScript: the Good Parts.

But Doug Crockford has a new challenge. O'Reilly's monthly tech newsletter says Crockford "has created a new programming language called Misty. It is designed to be used both by students and professional programmers."

The language's official site calls it "a dynamic, general-purpose, transitional, actor language. It has a gentle syntax that is intended to benefit students, as well as advanced features such as capability security and lambdas with lexical scoping..." The language is quite strict in its use of spaces and indentation. In most programming languages, code spacing and formatting are underspecified, which leads to many incompatible conventions of style, some promoting bug formation, and all promoting time-wasting arguments, incompatibilities, and hurt feelings. Misty instead allows only one convention which is strictly enforced. This liberates programmers to focus their attention on more important matters.

Indentation is in increments of 4 spaces. The McKeeman Form is extended by three special rules to make this possible:


indentation
The spaces required by the current nesting.

increase_indentation
Append four spaces to the indentation.

decrease_indentation
Remove four spaces from the indentation.


The indentation is the number of spaces required at the beginning of a line as determined by its nesting level.


indent
increase_indentation linebreak

outdent
decrease_indentation linebreak


The linebreak rule allows the insertion of a comment, ends the line, and checks the indentation of the next line. Multiple comments and blank lines may appear wherever a line can end.

An anonymous reader quotes a report from Ars Technica: For those looking for a more rigorous way of comparing various models, the folks over at the Large Model Systems Organization (LMSys) have set up Chatbot Arena, a platform for generating Elo-style rankings for LLMs based on a crowdsourced blind-testing website. Chatbot Arena users can enter any prompt they can think of into the site's form to see side-by-side responses from two randomly selected models. The identity of each model is initially hidden, and results are voided if the model reveals its identity in the response itself. The user then gets to pick which model provided what they judge to be the "better" result, with additional options for a "tie" or "both are bad." Only after providing a pairwise ranking does the user get to see which models they were judging, though a separate "side-by-side" section of the site lets users pick two specific models to compare (without the ability to contribute a vote on the result).

Since its public launch back in May, LMSys says it has gathered over 130,000 blind pairwise ratings across 45 different models (as of early December). Those numbers seem poised to increase quickly after a recent positive review from OpenAI's Andrej Karpathy that has already led to what LMSys describes as "a super stress test" for its servers. Chatbot Arena's thousands of pairwise ratings are crunched through a Bradley-Terry model, which uses random sampling to generate an Elo-style rating estimating which model is most likely to win in direct competition against any other. Interested parties can also dig into the raw data of tens of thousands of human prompt/response ratings for themselves or examine more detailed statistics, such as direct pairwise win rates between models and confidence interval ranges for those Elo estimates.

Chatbot Arena's latest public leaderboard update shows a few proprietary models easily beating out a wide range of open-source alternatives. OpenAI's ChatGPT-4 Turbo leads the pack by a wide margin, with only an older GPT-4 model ("0314," which was discontinued in June) coming anywhere close on the ratings scale. But even months-old, defunct versions of GPT-3.5 Turbo outrank the highest-rated open-source models available in Chatbot Arena's testbed. Anthropic's proprietary Claude models also feature highly in Chatbot Arena's top rankings. Oddly enough, though, the site's blind human testing tends to rank the older Claude-1 slightly higher than the subsequent releases of Claude-2.0 and Claude-2.1. Among the tested non-proprietary models, the Llama-based Tulu 2 and 01.ai's Yi get rankings that are comparable to some older GPT-3.5 implementations. Past that, there's a slow but steady decline until you get to models like Dolly and StableLM at the bottom of the pack (amid older versions of many models that have more recent, higher-ranking updates on Chatbot Arena's charts).

TechSpot remembers that Turbo Pascal "stands out as one of the first instances of an integrated development environment (IDE), providing a text-based interface through which developers could write their code, compile it, and finally link it with runtime libraries." The early IDE, written in Assembly, eschewed the use of floppies, instead building the code directly in RAM for an unprecedented performance boost.

The language demonstrated superior speed, greater convenience, and a more affordable price compared to its competition. Philippe Kahn, Borland's CEO who initially conceptualized turning the new language into an all-in-one product, decided to sell the software via mail orders for just $49.95, establishing a market presence for the then-newly founded company.
It was called "Turbo" because its use of RAM made it considerable faster, adds the Register: Anders Hejlsberg, who would later go on to join Microsoft as part of the C# project, is widely credited as creator of the language, with Borland boss Philippe Kahn identifying the need for the all-in-one tool...

Version 1 had limitations. Source code files, for example, were limited to 64 KB. It would only produce .COM executable files for DOS and CP/M — although other architectures and operating systems were supported. It would also run from a single floppy disk, saving users from endless swapping in a world where single drives were the norm and a hard disk seemed impossibly exotic — and expensive... However, it was with version 4, in 1987, that Turbo Pascal changed dramatically. For one, support for CP/M and CP/M-86 was dropped, and the compiler would generate .EXE executables under DOS, lifting the .COM restrictions...

For this writer, 1989's version 5.5 was peak Turbo Pascal. Object-oriented programming features turned up, including classes and inheritance, and a step-by-step debugger. Version 6 and 7 brought in inline assembly and support for the creation of Windows executables and DLLs respectively, but version 7 also marked the end of the line as far as Borland was concerned. Turbo Pascal for Windows would turn up, but was eventually superseded by Delphi.

However, the steamroller of tools such as Visual Basic 3 ensured that Borland never had the same success in Windows that it enjoyed under DOS. As for Turbo Pascal, several versions were eventually released by Borland as freeware including version 1 for DOS, 5.5, and 7.
I once took a computer programming course taught entirely in Pascal. (Functions, subroutines, and procedures...)

Any Slashdot readers have their own memories to share about Pascal?

More than half a century ago, Digital Equipment Corporation released the first of their 16-bit PDP-11 minicomputers, continuing the PDP-11 line until 1997.

This week long-time Slashdot reader Shayde writes: I've been working on a 1986 PDP/11 that I basically got as a "barn find" from an estate sale a year ago. The project has absolutely had it's ups and downs, as the knowledgebase for these machines is aging quickly. I'm hoping to restore my own expertise with this build, but it's been challenging finding parts, technical details, and just plain information.

I leaned pretty heavily on the folks at the Vintage Computing Federation, as well as connections I've made in the industry — and made some great progress... Check it out if you're keen on retrocomputing and old minicomputers and DEC gear.
The entire saga is chronicled in three videos titled "Barn Find PDP 11/73 — Will it boot" — part 1, part 2, and this week's latest video. "What started as a curiosity has turned into an almost 10-month-long project," it concludes, creeping up hopefully on the possibility of an awe-struck glimpse at the PDP-11's boot sequence (over two minutes long)

"So cool," responded Jeremiah Cornelius (Slashdot reader #137) in a comment on the submitted Slashdot story. "I have huge affection for these beasts. I cut my teeth in High School on a DEC PDP11/70 and AT&T SysV, and a little RSTS/E in 1979-82. We switched systems by loading different cakelid platters into the washing-machine drives, and toggling the magenta keys.

"I've thought about the Blinkenlights 7/10 scale emulator, tha uses an RPi, but I envy you and hope you have fun."

Anna Demming reports via Scientific American: [A]lthough so far there's no way to unscramble an egg, in certain carefully controlled scenarios within relatively simple systems, researchers have managed to turn back time. The trick is to create a certain kind of reflection. First, imagine a regular spatial reflection, like one you see in a silver-backed glass mirror. Here reflection occurs because for a ray of light, silver is a very different transmission medium than air; the sudden change in optical properties causes the light to bounce back, like a Ping-Pong ball hitting a wall. Now imagine that instead of changing at particular points in space, the optical properties all along the ray's path change sharply at a specific moment in time. Rather than recoiling in space, the light would recoil in time, precisely retracing its tracks, like the Ping-Pong ball returning to the player who last hit it. This is a "time reflection." Time reflections have fascinated theorists for decades but have proved devilishly tricky to pull off in practice because rapidly and sufficiently changing a material's optical properties is no small task. Now, however, researchers at the City University of New York have demonstrated a breakthrough: the creation of light-based time reflections. To do so, physicist Andrea Alu and his colleagues devised a "metamaterial" with adjustable optical properties that they could tweak within fractions of a nanosecond to halve or double how quickly light passes through. Metamaterials have properties determined by their structures; many are composed of arrays of microscopic rods or rings that can be tuned to interact with and manipulate light in ways that no natural material can. Bringing their power to bear on time reflections, Alu says, revealed some surprises. "Now we are realizing that [time reflections] can be much richer than we thought because of the way that we implement them," he adds. [...]

The device Alu and his collaborators developed is essentially a waveguide that channels microwave-frequency light. A densely spaced array of switches along the waveguide connects it to capacitor circuits, which can dynamically add or remove material for the light to encounter. This can radically shift the waveguide's effective properties, such as how easily it allows light to pass through. "We are not changing the material; we are adding or subtracting material," Alu says. "That is why the process can be so fast." Time reflections come with a range of counterintuitive effects that have been theoretically predicted but never demonstrated with light. For instance, what is at the beginning of the original signal will be at the end of the reflected signal -- a situation akin to looking at yourself in a mirror and seeing the back of your head. In addition, whereas a standard reflection alters how light traverses space, a time reflection alters light's temporal components -- that is, its frequencies. As a result, in a time-reflected view, the back of your head is also a different color. Alu and his colleagues observed both of these effects in the team's device. Together they hold promise for fueling further advances in signal processing and communications -- two domains that are vital for the function of, say, your smartphone, which relies on effects such as shifting frequencies.

Just a few months after developing the device, Alu and his colleagues observed more surprising behavior when they tried creating a time reflection in that waveguide while shooting two beams of light at each other inside it. Normally colliding beams of light behave as waves, producing interference patterns where their overlapping peaks and troughs add up or cancel out like ripples on water (in "constructive" or "destructive" interference, respectively). But light can, in fact, act as a pointlike projectile, a photon, as well as a wavelike oscillating field -- that is, it has "wave-particle duality." Generally a particular scenario will distinctly elicit just one behavior or the other, however. For instance, colliding beams of light don't bounce off each other like billiard balls! But according to Alu and his team's experiments, when a time reflection occurs, it seems that they do. The researchers achieved this curious effect by controlling whether the colliding waves were interfering constructively or destructively -- whether they were adding or subtracting from each other -- when the time reflection occurred. By controlling the specific instant when the time reflection took place, the scientists demonstrated that the two waves bounce off each other with the same wave amplitudes that they started with, like colliding billiard balls. Alternatively they could end up with less energy, like recoiling spongy balls, or even gain energy, as would be the case for balls at either end of a stretched spring. "We can make these interactions energy-conserving, energy-supplying or energy-suppressing," Alu says, highlighting how time reflections could provide a new control knob for applications that involve energy conversion and pulse shaping, in which the shape of a wave is changed to optimize a pulse's signal.

According to the Wikimedia Foundation, the page on "ChatGPT" was the most-viewed English article on Wikipedia in 2023, attracting nearly 50 million page views. The Hill reports: Wikimedia Foundation said English Wikipedia pages attracted more than 84 billion total page views in 2023, and ChatGPT topped its annual top 25 chart with a total of 49.5 million page views. The chatbot, created by Sam Altman's OpenAI, soared in popularity this year, as much of the public got its first chance to use artificial intelligence hands-on. The AI system debuted just more than a year ago, Nov. 30, 2022, and surpassed 100 million users, the nonprofit said.

Following ChatGPT, "Deaths in 2023" was the second most-popular page with 42.7 million views; "2023 Cricket World Cup" came in third place with 38.2 million views; "Indian Premier League" placed fourth with 32 million views; and "Oppenheimer (film)" rounded out the top five with 28.3 million views. The rest of the list includes articles on sports, film/television, celebrities and some current events. The full list of the top 25 most popular English Wikipedia articles in 2023 is available here.

An anonymous reader quotes a report from Wired: One of the world's most peculiar test beds stretches above Princeton, New Jersey. It's a fiber optic cable strung between three utility poles that then runs underground before feeding into an "interrogator." This device fires a laser through the cable and analyzes the light that bounces back. It can pick up tiny perturbations in that light caused by seismic activity or even loud sounds, like from a passing ambulance. It's a newfangled technique known as distributed acoustic sensing, or DAS. Because DAS can track seismicity, other scientists are increasingly using it to monitor earthquakes and volcanic activity. (A buried system is so sensitive, in fact, that it can detect people walking and driving above.) But the scientists in Princeton just stumbled upon a rather noisier use of the technology.

In the spring of 2021, Sarper Ozharar -- a physicist at NEC Laboratories, which operates the Princeton test bed -- noticed a strange signal in the DAS data. "We realized there were some weird things happening," says Ozharar. "Something that shouldn't be there. There was a distinct frequency buzzing everywhere." The team suspected the "something" wasn't a rumbling volcano -- not inNew Jersey -- but the cacophony of the giant swarm of cicadas that had just emerged from underground, a population known as Brood X. A colleague suggested reaching out to Jessica Ware, an entomologist and cicada expert at the American Museum of Natural History, to confirm it. "I had been observing the cicadas and had gone around Princeton because we were collecting them for biological samples," says Ware. "So when Sarper and the team showed that you could actually hear the volume of the cicadas, and it kind of matched their patterns, I was really excited."

Add insects to the quickly growing list of things DAS can spy on. Thanks to some specialized anatomy, cicadas are the loudest insects on the planet, but all sorts of other six-legged species make a lot of noise, like crickets and grasshoppers. With fiber optic cables, entomologists might have stumbled upon a powerful new way to cheaply and constantly listen in on species -- from afar. "Part of the challenge that we face in a time when there's insect decline is that we still need to collect data about what population sizes are, and what insects are where," says Ware. "Once we are able to familiarize ourselves with what's possible with this type of remote sensing, I think we can be really creative."

An anonymous reader quotes a report from Ars Technica: In a preprint research paper titled "Does GPT-4 Pass the Turing Test?", two researchers from UC San Diego pitted OpenAI's GPT-4 AI language model against human participants, GPT-3.5, and ELIZA to see which could trick participants into thinking it was human with the greatest success. But along the way, the study, which has not been peer-reviewed, found that human participants correctly identified other humans in only 63 percent of the interactions -- and that a 1960s computer program surpassed the AI model that powers the free version of ChatGPT. Even with limitations and caveats, which we'll cover below, the paper presents a thought-provoking comparison between AI model approaches and raises further questions about using the Turing test to evaluate AI model performance.

In the recent study, listed on arXiv at the end of October, UC San Diego researchers Cameron Jones (a PhD student in Cognitive Science) and Benjamin Bergen (a professor in the university's Department of Cognitive Science) set up a website called turingtest.live, where they hosted a two-player implementation of the Turing test over the Internet with the goal of seeing how well GPT-4, when prompted different ways, could convince people it was human. Through the site, human interrogators interacted with various "AI witnesses" representing either other humans or AI models that included the aforementioned GPT-4, GPT-3.5, and ELIZA, a rules-based conversational program from the 1960s. "The two participants in human matches were randomly assigned to the interrogator and witness roles," write the researchers. "Witnesses were instructed to convince the interrogator that they were human. Players matched with AI models were always interrogators."

The experiment involved 652 participants who completed a total of 1,810 sessions, of which 1,405 games were analyzed after excluding certain scenarios like repeated AI games (leading to the expectation of AI model interactions when other humans weren't online) or personal acquaintance between participants and witnesses, who were sometimes sitting in the same room. Surprisingly, ELIZA, developed in the mid-1960s by computer scientist Joseph Weizenbaum at MIT, scored relatively well during the study, achieving a success rate of 27 percent. GPT-3.5, depending on the prompt, scored a 14 percent success rate, below ELIZA. GPT-4 achieved a success rate of 41 percent, second only to actual humans. "Ultimately, the study's authors concluded that GPT-4 does not meet the success criteria of the Turing test, reaching neither a 50 percent success rate (greater than a 50/50 chance) nor surpassing the success rate of human participants," reports Ars. "The researchers speculate that with the right prompt design, GPT-4 or similar models might eventually pass the Turing test. However, the challenge lies in crafting a prompt that mimics the subtlety of human conversation styles. And like GPT-3.5, GPT-4 has also been conditioned not to present itself as human."

"It seems very likely that much more effective prompts exist, and therefore that our results underestimate GPT-4's potential performance at the Turing Test," the authors write.