So you are saying that it is “well documented”, that a light sensitive spot with all of the necessary combination of chemicals and material; the connective tissue with the correct balance of chemicals to allow the transference of this information to connect this light spot to the brain; the section of the brain that facilitates this tissue connection to be made to receive this stimulus; and the brain’s change so this new ability can be recognized -— (this ALL has to happen at the same time - one without the others is useless) -— THIS has been “well documented” -— all FOUR simultaneously occurring in one giant evolutionary leap ?????
would you like to explain that to me (and please use simple terms, I’m only an engineer - not a evolutionary scientist)
regards
False premise, many of these things serve other functions independently just as we see in simple mollusks.