I get it all but the goat part and when the ship men said they can only see three people :...

Agree, I don't understand the goat thing and the dream, also that a convenient wave took him without affecting the ship lol.

But the statement of the three people was a question. They said “wasn't there supposed to be three people” and the other said” That's right there three people why?...oh! I guess I was wrong” as in there were actually 4 people. I feel the way they put it was confusing xD.