because we've seen the voices in relation to both supposed 'times' with 'Arnold' now being in the present, which pretty much excludes the possibility of there being a timeline twist ahead without being utterly contrived and ridiculous.
It's an intuition on believability of a story: if a story goes so out of range that anything goes, there is no story. "everything was a dream" is one those devices where it completely break any suspension of disbelief to a point where nobody in the right mind would still care. It's too much fuckery to be good, basically.
I mean people walk around *today* with artificial knees just fine. I don't think this is an actual problem for the show. "Serious injuries bleed" is a fine ~dramatic truth~. But especially given everything we know about concussions from NFL players I think it's worth acknowledging that that dramatic truth isn't even kind of consistent with the real world.
"The robots pull their punches to be just hard enough to knock someone out but not hard enough to damage them" is a total nonsense model of human physiology.
I really liked how Last Action Hero actually made that into both a joke and a plot point: "it's just a flesh wound". Whereas in real-life, you die from those.
Media presentation of actual medical practice and science has changed a bit since then, but not that much.
The show can do what it wants, and obviously depicting violence and consequences works under rules of drama, not reality. But how much attempt at realism there is tells you a lot about the person writing it: their understanding of real-world effects, their ability to restrain magical solutions, their ability to write the story around the unchangable, and so on. It's a sign of internal complexity and thereby the maximum imagination the writer can wield.
Well, to me anyway.
edit:
btw, on some stuff that's in the show because of Michael Crighton:
- everything was Japan, because economy is booming! (and then the middle 90s happened, yeah)
- every company is incompetent with both cutting costs where it matters, and not checking on the actual merchandise. (it's kind of a trick that he used to make it seem as if science-men were smart, when in reality the company setup was unrealistic. But perhaps not so much in 80s. Just look up safety culture back then: ho boy)
- every company is involved in espionage and trying to dick over the rest. (stealing IP property was a subplot in the Jurassic Park novels too)