Evolution
Have always been a big fan of the evolution concept, I believe it explains much about our history and answers a lot to do with the “why” in the world.
The only thing I don’t appreciate is that it is not very good at predicting the future unless you are knowledgeable in genetics, organic chemistry and biology, plus understand exactly how a single generation mutation occurs (along with the implications).
Regardless it does give an insight into many peculiar things that animals and humans do (or have). This includes human behaviour and instinct which can be very unpredictable. Social behaviour and psychological evolution is very interesting in this aspect and often allows a sort of unfair advantage when dealing with others.
Its pretty straight forwards stuff too, this quote sums up why knowing about psychological evolution can be useful.
“The brain is a flawed lens through which to see reality. This is true of both mouse brains and human brains. But a human brain is a flawed lens that can understand its own flaws – its systematic errors, its biases – and apply second-order corrections to them. This, in practice, makes the flawed lens far more powerful. Not perfect, but far more powerful.” From here
In short we are not perfect, but once you know your imperfections you can correct for the deviation.