>Talking about elephants and... what was it... ah, memory, I've
>remembered another old problem. Probably no programming involved, but,
>with these new machines, pentiums and sexiums, one never knows. Here it
>is:
>
>If two men dig a hole in two days, how many days will it take four men
>to dig half a hole?

Well, I suppose it depends on how industrious each fellow is. And four men might be too crowded and get in each other's way, impeding progress. (s)

But absent such factors, how about 1/2 day?