Tl:dr Finance/Economics is arts(social 'science') pretending to be science.
It's the bane of modern society.
See Prof. Feynman's lecture "What is science" 1966.
From an interview with the BBC:
“Because of the success of science, there is a kind of a pseudo-science. Social science is an example of a science which is not a science. They follow the forms. You gather data, you do so and so and so forth, but they don’t get any laws, they haven’t found out anything. They haven’t got anywhere – yet. Maybe someday they will, but it’s not very well developed.
"But what happens is, at an even more mundane level, we get experts on everything that sound like they are sort of scientific, expert. They are not scientists. They sit at a typewriter and they make up something like ‘a food grown with a fertilizer that’s organic is better for you than food grown with a fertilizer that is inorganic’. Maybe true, may not be true. But it hasn’t been demonstrated one way or the other. But they’ll sit there on the typewriter and make up all this stuff as if it’s science and then become experts on foods, organic foods and so on. There’s all kinds of myths and pseudo-science all over the place."
Also refer to Soros' Reflexivity theory, specifically his book "The New Paradigm for Financial Markets." which lays the blame, quite damningly, for the 2008 crash and depression on treating finance and economics as a science. The number one critic of the book was Paul 'Always Wrong' Krugman. The old adage is correct: Economists spend half their lives designing models and the other half explaining why they didn't work.