Stan:
Actually, you are exhibiting exactly what I was saying, when I said "if you look intently enough for something, of course you're going to convince yourself that you see signs of it." When we are so absorbed and consumed by a belief, our very picture of the world is distorted.
You are convinced you see "sweeps" in Nick Barrow's head-cam video. But, 1.) knowing what it's like to wear a head-cam because I've done it for my line of work, and 2.) knowing Nick Barrow's instruction personally, I'm trying to share with you that he doesn't "sweep." Nick is a HUGE advocate (a classic advocation in the snooker world, actually) of acquiring the shot line BEFORE you step onto it, and before you bend down upon it. Classic snooker instruction -- and I have first-hand experience here -- is to acquire the shot line first, step upon it with the planted leg (the right leg for a right-hander and vice-versa for a leftie), and then bend down upon it. There is not supposed to be "misinterpretation" here, because this is classic "by the book" snooker instruction. Only a pool player who's "looking for something else" would misinterpret this.
And, I think it's a little disingenuous to believe that Nick, while wearing a head-cam and trying his best to keep his head still, is going to pedantically go through the "up, and then 100% perfectly downward" movement that is taught in getting down on a shot. Sometimes, after you've performed a shot, you'll find you're already on or very close to the shot line of the next shot -- especially in that classic line-up drill shown in the video. I'll bet Nick has shot that drill so many thousands of times, that he has "muscle memories" of moving to the next shot -- i.e. red, color, red, color, back and forth, back and forth. It's quite natural to have "movement shortcuts" instilled into muscle memory when doing a repetitive drill like this. A pool player like yourself, however, looking at this video -- and especially through [please forgive me, no offense!] tinted glasses -- is going to "see something different" and interpret those movements as something other than what they really are.
And yes, in analyzing Nick's view through the head-cam, maybe the Pro-1 visuals jump right out at you, but just because you see those visuals doesn't mean Nick does nor that he's using them. Like I said, Nick is a classic back-of-ball aimer, and this is what he teaches. Please read the notes underneath the video's window on YouTube -- he discusses there what his purpose is in creating this video. It has nothing to do with aiming or strict "this is what you should be doing on every single shot" rote-type of instruction.
Again, I'm only sharing first-hand info with you to help dispel incorrect perceptions -- I'm not trying to discuss the merits or pros/cons of CTE/Pro-1 or anything like that.
Warmest regards,
-Sean