Do you suppose I’ve never taken an economics course? I’m perfectly familiar with conventional economics. It’s political economy that I’ve had to teach myself.
Math is not a science, it does not proceed by the scientific method and is not empirical. It’s more like a form of logic. It’s actually more elementary than science, since it provides the tools for science to proceed.
As for economics being a science, I don’t want to derail the thread onto that topic, but it’s simply bollocks. Most reasonable people realize this. It’s why the Economics Nobel prize is a bit of a laughingstock and the source of occasional resentment from representatives of the hard sciences.
Properly speaking economics is most like a social ‘science’, which is to say it only studies human actions under a certain social system, not ‘natural’ phenomena of any kind. This is where the usefulness of historical materialism (broadly defined) comes into play. The study of capitalist economics does not apply to economic systems that came before it, or that (in some places, like Russia) have come after it. In this way, it is no more “universal” or “scientific” than the study of law.
The labor ToV, in Marx’s hands at the least, is not meant to explain the price of individual commodities. It is not a microeconomic theory, and its insights are not microeconomic. Furthermore, it concerns itself with production, not circulation. Simple circulation, in the form of resale, produces no new value.