Of course, there's luck too. You seem to be downgrading the considerable documentation and physiological study that has gone into hemispheric research. There is no reason for people without right brain dominance to go into the arts. You were right in the first place, Robert. To the others, I'm sorry to say, art will always be a mystery to them, and while they may love art in the way that collectors, critics, aesthetes and intellectuals do, they will never be able to make any other than the most primitive efforts.
Training only goes so far.
I'm not talking about the New York Abstract Expressions and all the other silly spawnings, though they are bad enough. I'm talking about all of the half-baked brainless amateurs who take a few courses and put out their shingles. They are in the wrong business and should stop muddying the waters and degrading taste. Right brain preference invites right brain art. I took the brain test twice, with quite different results.