There has been at least one book about how "Germany/Germans are getting dumber", "The Big Crash is Coming" or something similar on the Spiegel Bestseller list at all times. So far, the big crash didn't come yet. These books don't talk about a market correction or a financial crisis like in 2008, but a total economic crash, because "a finite world can't have unlimited growth", because "capitalism", because "climate ch…
Tangent - ordinarily I would consider it obnoxious to point this out, but I learned something and wanted to share it. As a native speaker, "the crash didn't come" sounds wrong to me - it should be "the crash hasn't come", but it took me a while to figure out why. I think the idea is that since you are saying "yet", you need to use the present perfect ("has not come"), which can imply an indefinite time (it might happ…
Deriving the reason for the different helper verbs from first principles is endearing, in principle, but you've merely given names to it that you somehow take for granted. It makes sense to have cut wood, and it makes no sense to do come or have come, except for a potatoe plant which if it cometh will have a Keim or Keimblatt to be precise; I'm guessing here.
German rather differentiates is and have in the perfective, "sie ist ge-kommen", "sie hat ge-sehen"; We don't say has come because we are intuited to think it is wrong. That is, you might as sell say the crisis is not ye(t)come.