Economic and scientific theories

The economists who support capitalism use rational choices, individual intentions to explain many to explain many economic phenomena: money, wealth, surplus value, commodity, financial crises, credit etc.,

Marxian economists abhor intentional and/or rational choice explanations. There is another reason to reject all neoclassical economic theories (all microeconomic theories), on the basis that intentional explanations are NOT explanations at all

It is very hard to digest Marx Das Kapital, but if you have read some philosophy of sciences, it is easy; because all scientific explanations are not of the type "premiss to conclusion". Scientific explanation goes in reverse direction: Given a conclusion (fact, phenomena), find the premiss (hypothesis.)Use this tip, and read scientific theories it clears up things.