How communicatively optimal are exact numeral systems? Once more on lexicon size and morphosyntactic complexity. - Chundra Cathcart; Arne Rubehn; Katja Bocklage; Luca Ciucci; Kellen Parker van Dam; Alzbeta Kucerová; Jekaterina Mazara; Carlo Y. Meloni; David Snee; Johann-Mattis List (CoRR, 2026)