Woudl aliens have 10 fingers and toes? Or even fingers and toes?
By the way, in Carl Sagan's one SF novel, Contact, the
creator of the Cosmos leaves a message to his creations
in Pi (this whole plot part was left out of the 1997 film
version).
Of course in a transcendantal number that goes on forever,
you will find just about any kind of message eventually.
http://scratch.mit.edu/projects/maki/118125
