Dreams are a way for your brain to work through your experiences of the previous day. Therefore, I think you dream language in such a way that your brain can categorise your dialogues, monologues thoughts and daydreams of the day and since those include language your dreams should as well. I personally dream of conversations and scenarios that happened to me during the day and those mix with the stories I have read, sometimes I can dream that I live in the world of Harry Potter because I read fanfiction that night about the subject. My dreams mix those stories with my own reality to create a dream reality, things will seem real in your dreams and when you wake up you often wonder how your brain could have come up with those scenarios.

The video explains how blind and deaf people dream. I read interviews before this when I was 14 years old when I became interested in blindness and deafness, I was curious about the impact on their lives. I read stories about how deaf people dream in beautifully detailed pictures and that blind people would hear conversations and sounds from nature as if they were actually happening around them instead of just in their dreams. This phenomenon has always fascinated me and will continue to do so.