Lila Gleitman points out to me that in one of the slowly increasing number of articles passing round the pseudoscientific story about Yiddish originating in four villages in Turkey you can see that hallmark of non-serious language research, the X-people-have-Y-words-for-Z trope:
Putting together evidence from linguistic, history, and genetics, we concluded that the ancient Ashkenazic Jews were merchants who developed Yiddish as a secret language — with 251 words for "buy" and "sell" — to maintain their monopoly. They were known to trade in everything from fur to slaves.
You can see the article here, but don't take that as a recommendation; it looks to me like unsubstantiated drivel. Exactly 251 words for buying and selling? No examples cited, and no hint of how more than two basic words and a few random approximate synonyms could be the slightest bit useful? It looks like classic myth-repetition of the usual Eskimo-words-for-snow sort.
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