#dragonsofeden

[populationpensive]

The human brain is characterized by some 2 x 10^13 synapses...This is an unimaginably large number...It is because of this immense number of functionally different configurations of the human brain that no two humans, even identical twins raised together, can ever be really very much alike. These enormous numbers may also explain something of the unpredictability of human behavior and those moments when we surprise even ourselves by what we do.

Carl Sagan, The Dragons of Eden