It's Puzzling

Putting a jigsaw puzzle together is simple; dump the pieces on a table and assemble them properly. However, like other simple tasks, such as hitting a ball with a bat, shooting an arrow at a target, or rolling a ball at some pins, to become proficient at the task, you should delve into the intricacies involved in performing the task. 

Knowledge

• • • There are things we know we know.

    • Things we know that we don't know.

    • Things we know that we don't know we know.

    • Things we don't know that we don't know. 

This site tells you everything you need to know about puzzles, and probably a lot you don't care to know.

When learning stops, death is near!