这个 app 的作者说他们的灵感是来自这里：
http://passfail.squarespace.com/并且还引用了一段 Steve Jobs 的话：
“Creativity is just connecting things. When you ask creative people how they did something, they feel a little guilty because they didn’t really do it, they just saw something. It seemed obvious to them after a while. That’s because they were able to connect experiences they’ve had and synthesize new things. And the reason they were able to do that was that they’ve had more experiences or they have thought more about their experiences than other people.”