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Comment Re: It could (Score 1) 78

Sometimes using the highway ROW works, other times it doesn't. This partially depends on the design of the highways, and partially depends one whether they have the same destination. A train station under a section of elevated roadway can work well...but if you don't have that convenient elevated roadway things can get more difficult.

I can't even estimate costs, but they can get pretty high. (And sometimes it's easy.)

Comment Re:It could (Score 1) 78

Since there are trains that go over the rocky mountains, I think that argument fails. (But it might succeed if you argue practicality rather than possibility.)

FWIW, The SFBay Area BART system has high speed trains that move from elevated to underground. It's not a steep grade, of course, but it's done. (IIRC "high speed" for the BART system is around 70 mph, and is only obtained on the long straight sections. Of course, my knowledge is multiple decades old.)

Comment Re:No. (Score 1) 78

There are also real problems with sparsely available origin and destination points. And the cost of building the lines through developed areas.

If you build a good system, it will be more efficient for the areas that it serves. But rail transit has fixed routes. This makes it inflexible. And you really need to multi-track the rails, because breakdowns will occasionally happen.

FWIW, I feel that streetcars are much more plausible/effective/significant per unit cost than are high speed rails. High speed rail is useful AFTER you solve the local distribution problems.

Comment Re:LLMs don't hallucinate (Score 1) 54

Agree about the meaning of "hallucinate" in this context, but...

You can't be sure your brain is deterministic. It may well have features that operate at the quantum level, with the implied genuine uncertainty. Transistors are normally scaled to avoid that problem. This isn't exactly "free will" in any normal sense, but it *is* non-deterministic behavior, at least as far as we can tell. (Yeah, superdeterminism is a valid interpretation of quantum theory, and so is the multi-world interpretation and a few others that take the entire universe as context. So in some sense it's still deterministic, but it's a really weird sense. And as far as the Copenhagen interpretation [i.e. "shut up and calculate"] goes even in that sense it's non-deterministic.)

Comment Re: Other Non-Evidence-Based claims (Score 1) 306

1) "give me liberty or give me death" was always a minority position.
2) Things that work well when people live in rural areas with slow communication don't necessarily work well when people live in dense clusters (i.e. cities) and conversely.
3) It is always the job of the individual to assign weights to his Bayesian priors. The state may control the costs of your actions, but should not be allowed to control your beliefs.

I hope I've covered what you were asking, but it was a bit unclear.

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