And they wouldn't, because the only person who suggests that Knaanic was ancestral to Yiddish, rather than having been displaced by it, is Wexler. Who is an unpleasant and academically dishonest crank, who, in addition to his discredited linguistic views, makes claims about the ethnic origins of the Ashkenazim which were always on shaky ground, and which have been conclusively disproven by modern genetic analysis. Not that this fact has motivated Wexler to retract his bullshit arguments.

I didn’t say it was ancestral, more like German Jews saw Knaanic and were inspired to create their own language.

I'm saying that discussions of the origins of Yiddish do not cover Knaanic because it isn't a part of the origin of Yiddish. No different from Judeo-Arabic in that sense: an interesting topic in its own right, just not relevant.

> German Jews saw Knaanic and were inspired to create their own language

This is... not how it works. I know of only one case of "inspired to create their own language" in all of history, and it's Modern Hebrew. Which is a revival, not de novo.

Yiddish wasn’t a created language.

You know what I mean.

No, I don't. Early jewish communities in Central Europe spoke the local language, then carried this language with them as they moved into Eastern Europe and the Baltics. Over centuries it diverged from its ancestral origin, as all languages do. At no point did anyone look at another jewish language and go “oh that's interesting; let's do something like that.”

I have a hunch that Jews came from Eastern Europe (I mean Israel before that). No, I don't think they are Khazars. But Ashkenaz was in Scythia, i.e. Eastern Europe.

Their history is very well documented. The Ashkenazi came from Italy into Germany, then moved into Poland (a bit different geographically from modern day Poland) after crusader pogroms in the 11th century.

Jews were in Czech Republic since at least 9th century. I don’t think they were German Jews.

As I said, geography was a bit different back then. These are the same people I’m talking about. They came from Italy.

I don’t think they did but I won’t convince you.

I think that's a genuine dispute, because people consciously deciding to make a new language is a relatively rare phenomenon. Most language change is informal and unplanned.