School. Teachers were stupid. Homework was stupid. Everything's stupid when you're a teenager.

Especially when they tell you to 'think about thinking'.

Sure, some people might find it interesting. But I didn't. it seemed pointless. Why think about thinking when you can just think anyway? I would get stuck in this horrible, endless loop, thinking about thinking about thinking. Being a pretty depressed teenager, I would grumble about this. In Maths, I would curse whoever invented standard deviation. In Biology, I would curse my teacher. But in Business, I would curse De Bono and his six fucking thinking hats.

God, I hated that blue hat. The thinking about thinking hat.