Savageduck
Somehow I think you guys have been using the wrong analogies for a photo NG. Forget about the racecar driver & architect, how about the owner of any digital camera, compact, or DSLR? Do they need to have a knowledge of how to operate a computer to shoot photographs with their digital camera?

nospam
no they do not, nor did film users need to know how to process their own film.

PeterN
Is it your claim that in the film days, a good photo artist did not have to understand the how and why of film. He did not have to understand masking with film, the effect of various chemicals, and light sources on things such as contrast, and grain?

Savageduck
Did you read "GOOD" anywhere to qualify "film users"?

nospam
he adds and deletes words so he can have something to argue about.

PeterN
He puts back the obvious context, to eliminate the irrelevancies, and ambiguities introduced by intellectually dishonest arguers.