While I like the scientific method, I am certainly not willing to try the same thing again and see if just as many people die a second time.
Capitalism kills far more people, by design. While the famine in the USSR was due to wide-spread drought, the famine that would kill millions in Bengal a few years later was entirely man-made.
I am interested in examining any modern plan to see if I can see issues in it or if it looks like it could work and is worth supporting.
You cannot understand present society, let alone have a model that can predict future developments with any reliability if you don’t learn history.
But if you want to understand economics, you’re gonna have to read a book on economics.