But our technological explosion--unlike anything the universe has seen as far as we know--is all we know...
Unless we study history. That "explosion" only began a few centuries ago with the Industrial Revolution. As I said, most of human history in most of the world's cultures has been characterized by stability and much more gradual progress.
Indeed, if anything, Star Trek's fetish for ostensibly humanoid species that have been in space for millennia or hundreds of millennia longer than we have--the Bajorans, the Vulcans, the Klingons--yet have technology so slow to advance that we can catch up and surpass them within fifty or a hundred years of heading into space shows a much more plain bias, a human chauvinism that would be offensive if a) humanoid aliens were real and b) the idea weren't so silly to begin with.
Actually it fits the historical pattern I'm describing quite well. As I said, progress is not a constant. It comes in relatively short spurts ("short" meaning a few centuries long) with long periods of stability between them. It's certainly possible that these older cultures reached a technological plateau long ago that humanity is "now" (in the Trek timeframe) racing to catch up with. There's precedent in Earth history. For most of the past two millennia, Asia and the Mideast have been far more advanced than Europe. But over the past few centuries, Europe has assimilated the knowledge of the East and used it to propel a burst of rapid progress, catching up with and surpassing those older cultures. Not because Europeans are smarter or more energetic, not because Asian cultures were "stagnant," but simply because the needs and circumstances of the respective cultures were different. China was the wealthiest and most advanced culture on Earth and entirely self-sufficient, so it was sitting pretty and didn't need progress; whereas Western Europe was comparatively lacking in resources, wealth, and global power and thus was strongly motivated to develop more advanced transportation (to acquire goods, materiel, and capital from overseas) and industrialization (to process those resources and profit from them), and to compete aggressively for political and economic power.
Alternately, to invoke a point we've already agreed upon, a Borg that had been evolving with its tech for thousands of centuries should be at least as powerful and advanced as Vejur.
My whole point is that I
don't agree with that. It is a fallacy that evolution entails a constant, predictable rate of forward progress. Progress is the exception; stability is the norm. Punctuated equilibrium. Evolution is adaptation to suit your needs. If you're already perfectly adapted to your environment, change would be counterproductive. The Borg have found a niche that suits them, so they have little incentive for radical change. What need does an apex predator have to evolve further, so long as its environment doesn't change? Sharks have remained virtually unchanged since before the age of the dinosaurs.
The term singularity is getting thrown around a lot in this thread. Let me give it a toss: If a reputable futurist thinks we can go from Univac to the singularity in under a hundred and fifty years, I don't think I'm being too biased if I say that the Borg are a rather unimaginative* representation of a species that's been tech dominated for longer than we've been a species.
The concept of the Singularity is based on a lot of naive assumptions about progress, intelligence, biology, cybernetics, and so forth. It's really more an article of faith than anything else.
Though I'll agree that the Borg are not a particularly imaginative depiction of a cyborg race.
Maybe, maybe not. Lore's lost Borg embraced Lore's plan to remake the Borg as the Droid--that is, to make them wholly artificial. Maybe Lore gave them that aspiration, maybe it was there all along
Those were anything but conventional Borg. They were formerly mindless drones who'd been separated from the Collective, left to search for identity and meaning. They were vulnerable to any charismatic cult leader that came along, which is what Lore was (or at least was an allegory for). As an android, Lore naturally had a vested interest in believing that pure AI was superior to biology -- or at least in convincing the Borg of that in order to persuade them to follow him. Since they were blank slates (this was before the retcon that all Borg drones were assimilated rather than incubated as Borg), they believed whatever they were told, so long as it offered them a sense of guidance and meaning.