This is used to find out how people think, predict how they will act and why they act the way they do. It is also useful when considering who and how they will be affected before taking an action.

Don't know what I'm doing.

CAF (consider all factors) is a thinking device used for making decisions, choosing and planning. The main difference between a point list of a standard plan and a CAF is that it forces you to notice frequently unnoticed factors, as well as considering other people.

AGO (aims goals and objectives). This is used for analysing why something is being done or for making a more detailed and better structured plan.

This is the first episode of a series of efficient and creative thinking tools developed by Edward de Bono. PMI (plus minus interesting) is used to prevent rash judgement and explore an idea more.

brief history and strategy of chess

"Leeches" are similar characters that are very hard to get your head around. I tell you how to kill them using the examples of 陈 and 阵 as well as 卸 and 御.

Summary of the book by Edward De Bono. It aims to help people think in a diverse way using steps to prevent confused thinking.

Facts on Elon Musk, his companies and how he plans to colonise Mars.