Universal between languages maybe, but certainly not universal between individual speakers.

There is also a lot of nonverbal data. Imagine the horror of discovering your conversational ML build could hold a plausible verbal conversation only guessing 58% of spoken words accurately... then realizing humans likely fair much worse. =3

"Prisencolinensinainciusol" (Adriano Celentano)

https://www.youtube.com/watch?v=Ax9c8f82QZA