Hacker News stories for 9 AM on Tuesday Jul 23, 2013

0.869 Is this the future of the airline website comments

0.785 If x is a fraction, x^x and x^x^x are irrational. But can x^x^x^x be rational? comments

0.749 How to write a toy Lisp interpreter comments

0.647 Impressions of Go comments

0.418 In Search of Simplicity — Improving Wunderlist’s sync comments

0.370 Court Gives Chevron Access To Nine Years Of Americans’ Email Metadata comments

0.277 Solar panels help keep buildings cool, reducing A/C needs comments

0.163 Macaw: The Code-Savvy Web Design Tool comments

0.019 Show HN: I built color search for iTunes comments