This is actually a very good advice, especially for people like me who have hard time visualizing how complex things work. For example, when I tried to understa

This is actually a very good advice, especially for people like me who have hard time visualizing how complex things work. For example, when I tried to understand what the meet-in-the-middle attack is, and couldn't, it was incredibly helpful to implement it (https://gist.github.com/1062437 https://gist.github.com/1062437). Then I understood.