From July 2012:
-One-billionth of sun’s power reaches the earth, and currently we harvest one-millionth of that one-billionth portion
-”Types” of civilization: Type 0 (what we are now); Type 1 (ability to harvest all energy of a planet–humans could get there in 100 years); Type 2 (harvest all energy of a solar system); Type 3 (harvest all energy on a galactic scale)
-Moore’s Law: Speed of human computing doubles every 18 months
Book Summaries. Less than 272 words. 