This literally means nothing, it doesn't mean you can just ignore any potential problems with a concept and just try to build it anyway
And even if Hyperloop is possible, it still doesn't make sense to do, because high speed rail already exists and makes a lot more sense, the US should start building that instead
My point (which everyone seems to be missing) is that all of these things were once considered to be impossible, until they weren't.
This literally means nothing, it doesn't mean you can just ignore any potential problems with a concept and just try to build it anyway
And even if Hyperloop is possible, it still doesn't make sense to do, because high speed rail already exists and makes a lot more sense, the US should start building that instead
But we already have high speed rail and maglev.