I used a very similar technique, but using two people. The one would give the other instructions to tie his shoe-laces. (Almost every-one failed to give succinc

I used a very similar technique, but using two people. The one would give the other instructions to tie his shoe-laces. (Almost every-one failed to give succinct instructions and that was my way of demonstrating 'program bugs'). This was followed by a 'Hello World Tie Your Shoe-Laces' program!