Popcorn with a side of acoustic sensors...

Instructions for microwave popcorn always give the same guidance: "wait until the time between pops is 2-3 seconds." And it usually works pretty well, so why shouldn't microwaves use the same method? Whirlpool's new AccuPop Cycle does, and I'm a fan - so much so that I proposed the same system in an "Introduction to Sensors" class way back in 2002! Oh well - just another missed chance to make millions, I guess...