The late Carl Sagan on the evolution of culture:

Posted by Jeff Pedigo at April 1, 2006
Categories: Memetics

“Information itself evolves, nurtured by open communication and freeinquiry. The units of biological evolution are genes. The units ofcultural evolution are ideas. Ideas have transported all over theplanet. They reproduce through communication. They are selected byanalysis and debate.”

Carl Sagan
COSMOS

(Count on somebody like Sagan to encapsulate my entire presentationinto 6 sentences.)
 
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