Your understanding is also mine. Great summary. > No linguist that I'm aware of would claim that language is just an I/O system. I think you're right. In Chom

Your understanding is also mine. Great summary. > No linguist that I'm aware of would claim that language is just an I/O system. I think you're right. In Chomskyian linguistics there is a distinction between i-language and e-language (https://en.wikipedia.org/wiki/Transformational_grammar#%22I-language%22_and_%22E-language%22 https://en.wikipedia.org/wiki/Transformational_grammar#%22I-...). E-language isn't "just I/O" but it's perhaps not far from that whereas i-language is taken as the proper subject for linguists to study.