Well, that was just a few episodes.
The more entertaining part is how nearly every goddam week, the crew of Enterprise discover a phenomenon which, if studied, understood, and engineered, would change society forever. Hell, sometimes the crew even invent it themselves out of desperation. but the next week? Gone, like it never happened. What the fuck is wrong with these people? I understand that technology is supposed to be advanced to the point where most people don't "need" anything more, but clearly some people do, since we see their continuing difficulties. Just write this shit down and send it to the scientists at Starfleet. Surely someone would eventually figure out every possible way to "invert polarity" and just program the computer to do it automatically.
I mean, the crew accidentally invented a supergenius AI one time by unwittingly asking the computer to do it for them. Then they defeat Moriarty, and presumably everyone agrees to forget about it for some reason. Fucking hell. You'd think that if a single enterprising Ferengus got hold of a Federation ship, they could probably take over the galaxy (or at least kill themselves in spectacular fashion).
They sort of tried to do something with continuity when they introduced transwarp, but apparently got tired of it pretty quickly. The sad fact is that Star Wars has more inter-episodic consistency than Star Trek, partly by aspiring to a lot less.