> Language can easily be interpreted as a technique of the tongue. Obviously, the main contributor to the extra level of human evolution is the propagation of t

> Language can easily be interpreted as a technique of the tongue. Obviously, the main contributor to the extra level of human evolution is the propagation of thoughts from mind to mind. It's not just a technique or a system of communication. It's a communication system that is coevolved with us to help us optimally think about and communicate in our social environments. Language does this by compressing our reality into a set of useful abstractions that have high utility. If an abstraction is useful (e.g. "money" or "drink"), it survives evolutionary pressures. If it is not useful, it is discarded by evolutionary pressures. You're left with a highly optimized system that compresses our shared reality into the sweetspot level of abstraction such that we can think and communicate optimally within the memory limits of our brain. That's amazing. What's unresolved, in my mind, is how much did language contribute to our evolution? Like, what exactly does the bidirectionality look like in this coevolutionary process?