“…Even assuming models may eventually reach human-like functional competence in some pragmatic, gestural, or prosodic areas, the functional capacity for language in humans is not limited to the production of more or less well-formed strings for broadcast transmission. There are key functional elements of language that are not available to or emergent in LLMs, for example, turn taking (e.g., Casillas et al, 2016;Levinson, 2016;Stivers et al, 2009), co-speech gesture and multimodality (e.g., Goldin-Meadow & Brentari, 2017;Kita et al, 2007;Rasenberg et al, 2022), repair (e.g., Dingemanse & Enfield, 2024;Dingemanse et al, 2014Dingemanse et al, , 2015Hayashi, Raymond & Sidnell, 2013), and common ground negotiation (e.g., Brennan & Clark, 1996;Brown-Schmidt & Duff, 2016;Clark & Wilkes-Gibbs, 1986) are all essential parts of natural language in interaction. This also blurs into other aspects of our broader socio-cognitive suite including ostensive inference, perspective taking and joint attention (e.g., Heintz & Scott-Phillips, 2023;Tomasello et al, 2005).…”