WeepingElf wrote: ↑Sat May 30, 2026 3:03 pm
There are some things that look like proper comparative method at first glance but aren't. One is the technique used by Nostraticists, both the "Moscow school" and Allan R. Bomhard. These people give sound correspondences and cognate sets for the families they compare, which look nice. But that's deceptive. What they do is to set up reasonable-looking correspondences between the phonemes of the various families and
then trawl the families for words that happen to conform to them. With many of the families containing dozens of languages, and matches in one language each in just two of the compared families considered "good enough", it is hardly surprising that they find something. Languages are
big, each having thousands of words, so it is no wonder if something matches by mere chance.
How such a procedure can go wrong can be showed by comparing Greek and Armenian that way. Both languages have the same three types of stops - voiceless, voiced
1 and aspirated - and using this technique, one would surely match each type in Greek with the same type in Armenian (the Nostraticists indeed prefer such trivial correspondences), and there are probably some words that seem to match that way (any post-shift Iranian loanword in Armenian which has a cognate in Greek, and whose PIE etymon doesn't involve voiced aspirated stops
2 would fit!) - but alas, we know that the stop types really do not match that way, as they have been permuted in Armenian by the Armenian sound shift. It tells a lot that both the Moscow school and Bomhard have found hundreds of "cognates" despite using
different sound correspondences - they can't both be right, which probably means that both are wrong.
Real comparative work involves finding cognate candidates and
then reconstructing the proper sound correspondences from what can be observed in the words resembling each other. This is much more difficult, and gives no results if the languages are unrelated or the relationship is too deep in the past - after about 10,000 years, the comparative method simply runs out of cognates, with correspondence sets so numerous (because of the large number of conditioned sound changes accumulating) and also so small (most of them containing only one single item) that they can no longer be distinguished from chance resemblances. (Also, words are simply lost.) Kind of like how the C14 dating method fails with samples older than 50,000 years because too little C14 is left in them. We can then only catch
hints at relationships, such as similar pronouns, but can't prove the case any more by the comparative method because there are too few cognates left.
[1] There is reason to assume that the Old Armenian voiced stops were actually
breathy-voiced, inherited intact from PIE. This has been reported for some Eastern Armenian dialects, and it would make sense of the Western Armenian shift where the voiced stops merged with the aspirated stops.
[2] In words with such stops, the PIE voiced aspirated stops appear as aspirated stops in Greek but as voiced stops in Iranian and thus Armenian, spoiling our neat correspondence.