Wanker writes "In the wake of a lawsuit by J.K. Rowling against the author of a Harry Potter encyclopedia, the Greensboro Rhino Times has an article by Orson Scott Card blasting J.K. Rowling for 'letting herself be talked into being outraged over a perfectly normal publishing activity.' Orson Scott Card has hit the nail on the head. He understands that authors re-use each others' ideas all the time, and certainly Ender's Game gets its share of re-use. Did Rowling's success go to her head?"
Card lays out (something like tongue-in-cheek) some of the similarities between the story in Ender's Game and in the Potter series: "A young kid growing up in an oppressive family situation suddenly learns that he is one of a special class of children with special abilities, who are to be educated in a remote training facility where student life is dominated by an intense game played by teams flying in midair, at which this kid turns out to be exceptionally talented and a natural leader." (And that's just to get started.)