And if the rules of the game change (or the reasoning behind the original plan), like they did in Indianapolis, how far must the government go to ensure that everyone is on equal footing?

FORBES: Supreme Court Asked to Answer What's 'Fair' When it Comes to Taxpayers

In that trial, about 2, 800 elderly participants showed improved memory, reasoning and visual processing speed after playing an earlier version of the Double Decision game, said Dr. Wolinsky, who also worked on that earlier research.

WSJ: When Computer Games May Keep the Brain Nimble

It was an astonishing triumph of human visual-spatial reasoning, and one of the first major scientific advances to come from playing a video game (though plenty of software engineers I know would argue that video games activate much more creativity than we care to acknowledge).

CNN: People and computers need each other