Yeah, I've seen that before. Rather than moving your head from one side of the cue to the other, what is the matter if from a standing position, you just shift your head, either right or left until you see the correct aim line.
What would be nice is if Dr. Dave would do a video just using a head shift from a standing position to arrive at an aim line and then dropping down on the shot line. That would be interesting.
John
John
To me, this concept is pretty weird. I think the problem with what you are describing is that its adds moving parts to the biomechanical equation and is not consistent with how our body & visual processing system naturally works, nor is it consistent with any other sports approach that I'm aware of. Each person's center vision is their center vision and its quite easy to ID that line on our body, align & lock our stance on it consistently. Can you provide any links to anything in visual science or sports cognition/psychology literature that supports such a concept, and/or why it would be more beneficial to so, vs the more standard definition/approach such as the DD link provided above?
Parallax concepts & terms get thrown around a lot - but
parallax (basic wikipedia def) is simply the 2 slightly different angles of vision created by our eyes being in different locations when viewing an object, and it's the basis of how we perform depth & distance perception and is what most of us refer to as "center vision". It is affected by each person's ratio of eye dominance and other physiological factors, but basically it's a product of where our eyes sit in our head, same for all creatures or systems which use binocular vision. It's very unclear to me why or how shifting your head will "eliminate parallax errors" - if anything, creating any additional offsets from your body's central stance with small head motions will cause more stereoptic noise & lead to other issues. I'm not attacking you, I'm just finding it pretty hard to understand the CTE guys concept of using head shifting to somehow correct something, and so far I've not seen any technical references (aside from Stan's book) offered up to explain it, but his book seems to be contain his own concepts - can anyone tell me if it provides references to 3rd party literature to support any of his visualization concepts? I've watched his newest videos, confess I find them pretty monotonous and only ref he mentions is Hal and haven't slogged through all of them. I'm not knocking Stan or Hal in any way, I find their stuff interesting but hard to grok, overly complicated, and doesn't align with any modern visual/sports references that I can find.
The fairly standard pool concept of learning how to align our stance to our individual center vision and locking that head/torso position is well documented. Then it becomes a question of align to what? I think the what should be either CTC or CTE, as center and edges of balls are the most clear, objective things we can clearly see on the balls. Defining additional parallel reference lines (ETE for CTC, and ETC for CTE) simply aids the process. Of course we can argue align to different things shotline, contact points, fractions, A, B, C, etc - and that's fine. But this head shifting and stepping the CB stuff is really a pretty vague concept - and so far I've seen no hints thats its rationally explained Stans book, but I don't have the book so I'm genuinely asking - are these head shifting/stepping concepts entirely self defined by Stan, or does he provide any 3rd party references to help us understand the rationale for how/why its said to work and what exact problem is it solving?
Thanks