What we see always depends in part on what we expect to see.
It takes a brain to see, not just a pair of eyes.
A translation from one language to another.
Every user of a human language must have had a language-free intercultural communication. We do use language to communicate, and the language that we use certainly has some bearing on what, with whom and how we communicate. But that's only part of the picture. It is artificial to limit our grasp of communication to written or even spoken language.