Social Sciences and Society - TierneyLab Blog - NYTimes.com

Social Sciences and Society - TierneyLab Blog - NYTimes.com: "Mr. Gardner’s favorite puzzles are the ones that require a sudden insight, like this one from his “aha! Insight” collection: How could you and a friend both stand on the same single sheet of newspaper in such a way that you can’t touch each other? (If you want to try this one out, I hope you’ll use a sheet from the Times.) Dr. Gardner believes that the evolution of that aha! pleasure has been crucial to human culture."