You have a different understanding of my comments than you ought to. You read a single article, which you now take as the Holy Grail, and have decided that, because someone wrote something that you have interpreted as you see fit, it applies to every human being on the face of the earth, and that's just plain ignorant.
I've seen savants multiply ten-digit numbers in their heads more quickly than you and I could ever dream of multiplyingy two-digit numbers (and yes, I see a perfectly valid analogy here). Do you want to claim that it "goes against the science of how the human brain works"? You don't get to make that kind of statement, and it isn't remotely true.
You're incredibly naive to think that someone motivated to learn or apply a level-two, level-three, or even level-four count couldn't do so as skillfully or more so than someone using level one. The thought of such a claim is patently absurd. It's like saying that the most skillful Olympic diver couldn't possibly do a triple somersault with a double twist more skillfully than you could a swan dive. What would possess you to make such a ridiculous statement?
Could you honestly be so gullible as to think that you could see a jack and a four and cancel them to zero any more "skillfully" than I or ten thousand other players could call the same pair zero using level two?
Finally, if you were to win such a contest because you were half my age and had better vision, how would that in any way advance your argument? To win that contest, you would have to go up against someone whose only difference from you would be to use a level-two count, rather than a level-one one, but with all the other variables removed, to make it a true apples-to-apples comparison. Otherwise, how would you know that you "won" because "the human brain can't count level two as well as level one," as opposed to you won because you're up against a 72-year-old who wears glasses?
Bottom line: just drop it. The argument is pointless (and fallacious). You're entitled to your opinion, with which I steadfastly disagree.
Don