> How many people, with all of our intelligence, could program homogeneous robots that are able to burrow into the ground and meet two tunnels underground from

> How many people, with all of our intelligence, could program homogeneous robots that are able to burrow into the ground and meet two tunnels underground from either end by only exchanging rudimentary signals with each other? Well, this is not far off: http://en.wikipedia.org/wiki/Channel_Tunnel#Tunnelling http://en.wikipedia.org/wiki/Channel_Tunnel#Tunnelling