From an uncited part of Tocharian languages:
Since the sound's position determines what letter is used, why are these two glyphs considered different letters, rather than one being seen as a variant of each other? Hebrew's sofit forms, and final forms of "S" (ſ rather than s) and "Σ" (ς rather than σ), are considered variants rather than separate letters, and when Tocharian was discovered, it didn't have any living speakers to argue for them to be considered separate letters. Tocharian script#Table of Tocharian letters doesn't answer my question, since every consonant letter appears to represent a different sound. Nyttend (talk) 22:17, 1 March 2024 (UTC)