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That's not really true, but I feel like is a common misconception. We watch conventional shielding repel people and physical attacks all the time. We also see Borg shields do the same on occasion as well. When we see Borg die from more physical attacks, it's usually because the Borg aren't even anticipating it (since Borg have no creativity/imagination). Worf can switch to his mek'leth and get a few extra kills that way once his phasers have been adapted to. But I can guarantee that if he took on a horde of drones, that they'd quickly start cycling their shields at frequencies to start bouncing him off and then he'd be screwed. If Worf can jury rig a combadge to make a forcefield that can repel bullets, the Borg have to be able to do the same with their own built-in shields.Borg have a hard time adapting to low-tech weapons like bullets and... err... just smacking them really hard
Why didn't they do this in First Contact instead of silly time travelling?*The Borg also have mass-assimilation tech like detonating a nanite-bomb in the upper atmosphere of a planet and then infecting the entire planet en masse.
Yeah, for a spring once it goes beyond the elastic limit it goes into plastic behaviour and it won't return to its original shape. The mechanical energy in the system will decrease as a result. While they can't be directly applied to theoretical energy shields I'd imagine equal and opposite energy would have to be supplied to deflect things and that would effectively be the equivalent of mechanical energy. If the impact exceeds what the reactor can supply either in total or in a spike, the shields would fail. So saying "they have shields" shouldn't be a magical "nothing can stop me now" thing.Alternatively, they may have defenses, but you can only convert and/or redistribute energy up until a certain threshold and then you run out of power, the shield generation mechanism overloads because it can't convert quickly enough, or the projector crumples from the feedback.
And now I'm wondering what happens to a steel spring if you compress it with one of those science video machines that squash various materials.
EDIT: Seems about right:
First experiment is misleading because the alignment of the spring.makes it fold sideways Second one seems much more applicable to anything that projects a free-standing mechanical energy shield.
My big problem with the 40k setting is that most of the time, for all its talk of being a satire, the Imperium is portrayed as a "necessary evil". I mean, in a universe where actual demons can break through into reality and cause planetary-wide destruction if a single human mutant loses concenration for a moment, and where there are secret cults that physically alters its members to be fanatically devoted to summoning planet-devouring alien insects, a certain paranoia and surveliance seems necessary for humanity's survival. And since there are several very prolific alien species who apparently exist only for warfare, who can't be negotiated with in any way, there is a need for a pretty sizeable standing army, and a focus on producing weapons over peactime necessities. And since apparently most of the galaxy's non-human population, aside from the Tau and maybe the craftworld Eldar, are huge assholes, it's understandable why humanity has become quite xenophobic.
It also seems very rare that the fiction suggests that the Imperium is somehow the cause of any of these threats (most of the things that caused the universe to be such a hellhole happened thousands or millions of years before the Imperium even existed), or that there is any better solution than what it's currently doing (you can't negotiate or create any long-term peaceful situation with Orks, Tyranids or Chaos, as far as I can tell). So Games Workshop has basically set up a universe where humanity can only survive through a fascist, xenophobic and religiously fanatic necrocracy, and anyone who tries anything else inevitably ends up getting eaten by demons.
Well, I guess the tech-priests are the exception. They really do seem like humans that could make the universe a better place if they'd start doing things differently. But even they often get eaten by demons when they try to invent new stuff instead of just churning out more of the same old stuff.