Perspective: http://www.youtube.com/watch?v=p86BPM1GV8M http://www.youtube.com/watch?v=p86BPM1GV8M The most important section of Sagan's book I believe. Put it

Perspective: http://www.youtube.com/watch?v=p86BPM1GV8M http://www.youtube.com/watch?v=p86BPM1GV8M The most important section of Sagan's book I believe. Put it on when you have had a bad day or are struggling with a task. I cannot count the number of times I have posted this on HN!