• I do understand how DNA works, I’m actually a biologist. And I don’t doubt that it is complex. What I doubt is that it is a complex system of communication. But sure, I see your point that is some form of complex transferral of information and that yes, if I stretch my understanding of language a bit, it probably is one as well. Maybe the next question would be: what is this useful for? What can we learn from that? Like I said (not sure if in this or in another comment), maybe we then need to have various categories for language?

    E: and we could explore the new fringe cases a bit more, too. If DNA/RNA is a form of language, then even non-living entities can have language like in form of viruses. If abiotic things get complex enough, would we also call it language at some point? Like chemical reactions?