Richard W wrote: ↑Tue Sep 01, 2026 5:52 pm
Proving two words are cognate can be difficult. One can be uncertain because of divergences in meaning, and sporadic or highly conditional sound changes can be difficult to confirm when the material is slight. Conversely, there are cases where the semantic and
phonetic correspondences are good, e.g. English and Farsi
bad or, without any plausible common ancestor, English and Mbabaram
dog. Making a yes or no decision is not a useful approach when any actual matches have been buffeted by the millennia.
This may just be a case of over-summarization, but you seem to forget that the comparative method is iterative. It
doesn't matter that proposed cognates are uncertain; that's only the first step. You look for regular sound changes, and if you find them, you
revise the cognate list to reflect what you find.
Eg. maybe you start out thinking that
diēs and
day (or
bad and
bad) are related, then you find out that this is not in fact how Latin/English correspondences work, and you remove it from the cognate list. You might start out thinking
two and
yerku are not related, and then find evidence that they are.
People are very very easy to fool when they're comparing lexicons. But that's only a problem if you stop there, like Greenberg. Precisely because word histories are so messy, you can't establish anything by mass comparison, even if you start talking probabilities instead of certainties.
(Now, maybe it would be useful to attach a probability to each asterisk. That is, a reconstruction like PIE is, say, 50% probable in its details. Then a reconstruction based on other reconstructions, like Nostratic, is 25% probable or less. People forget how fast multiplying probabilities reduces the overall certainty level. Chain together 3 statements of 80% probability and the result is just 51% probable.)