> Economics is not money. Its about how to allocate the limited resources in the most efficient way.

At least some presentations of Star Trek (or, at least, Federation) "economics" were that it was not economics; not having money was a symptom of that, but the fundamental thing presented was that scarcity was solved because resources were not practically limited (which is why they didn't have money.)

(Of course, there was a whole lot presented at other times that seems to be at odds with that.)