One of the bests post I have ever read on trading.
http://www.financial-math.org/blog/2017/05/pseudo-quants/
It has taken me a long long time to recognise the truths described in this article. The real point is that
Finance is not a science
You do NOT have to be a scientist to "get" this point. You DO have to be well read in science for non scientists. You do need to consider what some would see as almost philosophical points about the nature of the universe and its physical laws.
I am neither a mathematician or scientist. But endless work and endless study in a top down sense has made me realise the true wisdom of what this Mathematical Investor website provides. Very good commonsense advice that the vast majority of financial markets players really, really need to grasp.