I saw this demonstrated by Clifford Stoll, except he used marshmallows. Fascinating stuff; my son is 9 now, and just started getting into being able to underst

I saw this demonstrated by Clifford Stoll, except he used marshmallows. Fascinating stuff; my son is 9 now, and just started getting into being able to understand a little bit of this. I can't wait to do this with him.