Hacker News stories for 10 AM on Tuesday May 21, 2013

0.647 IBM’s Watson Tries to Learn… Everything comments

0.618 Cancer and Startups comments

0.442 Why do professional photographers charge so much? comments

0.422 Call Congress today to support HR 1892, “The Unlocking Technology Act” comments

0.352 2010 Unibody Macbook schematic comments

0.336 Memcached turns 10 years old today comments

0.318 CircleCI: Our First Postmortem comments

0.168 The New iTunes Mini Player comments

0.136 Celery Lets Sellers Accept Pre-Orders, Charge When Ready (Airbrite YC S’12) comments

0.094 An eBook pricing model that resulted in $100,000 in sales comments

0.048 KTAP: A New Scripting Dynamic Tracing Tool For Linux comments

0.036 Hacker News is depressing comments

0.016 Show HN: My new homepage comments