Some time ago, I came across this page on Wikipedia. The problem is interesting, and I understood it. There used to be a small part on the bottom that said something like 'One can stack a block, such that it overhangs off the table, and put more blocks on the first one to make the overhang arbitrarily large.' Now, it seems to have been removed for some reason. Or maybe I saw it somewhere else. I don't know. Any explanation or illustration on how such a stacking can be done? Thanks.