Dr. Dave falls victim to his own to his own experimental bias?

[Low500]

You must have pretty good eyesight to be working down to angstroms. That will still be useful but you have to set up for the center of the contact patch. A complication is that the center of the contact patch moves while the balls are in contact. That is, the line of centers of the balls turns some during the contact as the cue ball in effect goes slightly through the object ball.
Related to which, one of the chapters in the Sports Gene is about baseball and it turns out that a lot of ball players and especially top hitters have visual acuity down in the 20/10 to 20/8 range. This is partly related to the density of receptor cells in the retina as I recall. Some people can just see better than others.

You are absolutely right.
When I was 17 and sent up to Memphis in the old Southern League, I'd tell those old guys I could actually see the stitches on the ball as it was coming toward the plate. I was just blessed with great eyes.
(I never made it to the Big Show as my weakness was hitting the low and away and those buzzards exploited that weakness to the max. I didn't last too long.)

 

[Low500]

You must have pretty good eyesight to be working down to angstroms. That will still be useful but you have to set up for the center of the contact patch. A complication is that the center of the contact patch moves while the balls are in contact. That is, the line of centers of the balls turns some during the contact as the cue ball in effect goes slightly through the object ball.
Related to which, one of the chapters in the Sports Gene is about baseball and it turns out that a lot of ball players and especially top hitters have visual acuity down in the 20/10 to 20/8 range. This is partly related to the density of receptor cells in the retina as I recall. Some people can just see better than others.

You are absolutely right.
When I was 17 and sent up to the Lookouts at Chattanooga in the old Southern League, I told those old guys I could actually see the stitches on the ball as it was coming toward the plate. I was just gifted with good eyes.
They hee-hawed and burned my young ass in other ways pronto.
(I never made it to the Big Show as my weaknesses were hitting the low and away and diving into the dirt when they threw that fadeaway at your head..(there were no helmets back then) and those old buzzards exploited those weaknesses to the max. I didn't last too long. Great eyes or not.)