https://s.yimg.com/aah/paulgraham/how-to-think-for-yourself-1.gif https://s.yimg.com/aah/paulgraham/how-to-think-for-yourself-... I wonder who makes these, and

https://s.yimg.com/aah/paulgraham/how-to-think-for-yourself-1.gif https://s.yimg.com/aah/paulgraham/how-to-think-for-yourself-... I wonder who makes these, and how are they made.