December 2011
5 posts
2 tags
1 tag
"Why We Haven't Met Any Aliens" →
Paleontology has shown that organic life evolved quickly after the Earth’s surface cooled and became life-hospitable. Given simple life forms, evolution shows progressive trends toward larger bodies, brains, and social complexity. Evolutionary psychology has revealed several credible paths from simpler social minds to human-level creative intelligence. So evolving intelligence seems...
1 tag
