I would like to ask some advice from the collective wisdom here. I have been doing more work on this 'arrow' issue, and as there does seem to be evidence that archers continued in existence through the Bronze Age - even if not in the most high status - and that the idea of the archer is quite strong across many western mythologies to this day even. So the notion that archery was mostly lost along with all words for it, doesn't sound very likely. Of course the archery words could have been swamped out by Latin usage for auxiliary archer troups, but I don't think we can accept that as an unprovable default until all other options have been disproved.
But I still haven't found any satisfactory source for the origin of the word that becomes 'sagitta' in Latin and is found throughout Europe. And I was looking at this word dil.ie/35951 SAIGID which is very well attested and has many suggestive associations, meaning seeks, strives, reaches, attains, aims at, attacks etc. . It seems on the surface of it that this would be a good candidate for the source of a word for 'arrow' SAIGET dil.ie/35949. and saigteóir, soighdeóir dil.ie/35963 , so can I ask if there is any reason why these two words shouldn't be connected?