The following parallelepiped was found by Clifford Reiter und Jorge Sawyer (Lafayette College, Easton, Pensilvania) with brute force computer trials.
We all avoid different things. I avoid polyester clothing. They avoid talking about death.  (Lisa Daxer)

Projects on SETI projects look for extraterrestrial signals from space.  Work with dolphins, elephants, even chickens seeks to see if these animals are intelligent communicators.  In all this, we take for granted that we understand how we humans, as social creatures, think and react.  But our understanding of communications and social interaction relies on some unusual assumptions.