Why Tetris is like climbing and the Zen art of playing Modern Warfare 3

Years ago I had an argument with my brother about whether climbing was like playing Tetris. I argued that it was: he that it wasn't. Obviously it's not exactly like climbing, but as in climbing the slow accumulation of errors, of less effective choices means that you either have enough energy to make it to the top or you don't. In most other respects they are utterly different, but I would never have made that connection if I hadn't at times previous done a lot of climbing and played a lot of Tetris.

Free Will

The notion of free will sits right at the centre of everything we consider civilized and human, but it probably doesn't exist in the sense that it is commonly understood.