There's an old saying that you can't unscramble an egg. It means that there are some actions that cannot be reversed, like speech. Sure, you can "take it back," but the damage has already been done. But like many old adages, science looked at it and said why can't you unscramble an egg? Because of entropy. Well, that clears things up.
But Leonard Hayflick responded to a 1990 article in the journal Science by explaining how you can unscramble an egg. Think about it, and see if you can come up with a better answer than his.
That bit of genius sparked a back-and-forth in the letters section of the journal, as an argument between eggheads ensued over whether this method would or would not violate the Second Law of Thermodynamics. Read those letters, and feel free to post your opinion, at Weird Universe. -via Nag on the Lake
(Image credit: Makia Minich)