I suggest you reconsider your position on fiction

I now believe that fiction could be useful because it conveys experience. For example, The Walking Dead, the Tv series I am watching at the moment, has a complex interplay characters, as it shows how humans interact in a plethora of situations.

Most people don't have that in mind when they bump into fiction. But, as I said, if you don't have enough experience, and you need a quick dose, sometimes fiction can help you.