timothy from the what-color-is-your-parachute? dept.
AxSpark writes "More and more Americans have the tendency to work after retirement and this number is growing day by day. Last year this number was 6 million people of 65 and over working. The reason for that is quite evident: pensions are not enough for sufficient living."
Quantum Mechanics is a lovely introduction to Hilbert Spaces!
-- Overheard at last year's Archimedeans' Garden Party