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The +/- 0.001" is for roundness. The surface smoothness of a pool ball is closer to +/- 0.001mm. An old beat-up cue ball might have a few nicks and dings in it, but still the overall/average smoothness is better than the Earth would be if we could shrink it down to the size of a pool ball...

Two different things - smoothness and roundness. The earth would feel like sandpaper if it were the size of a pool ball. A ball's surface smoothness is measured in microns.

Exactly. If there's a learning curve (experience or time needed to make it start working), then that means the process undoubtedly contains subjective elements. Developing solid aiming skills is similar to learning how to juggle. The exact steps can be defined objectively, but performing the...

It's really simple... Islamic law (rooted in religious dogma written by men, like all the old/traditional religions on earth), is designed to keep women subservient to men. Women are considered property of men. With most other religions, this part of the dogma has been watered down quite a...

Depends on how you shoot it. Using "table side" spin with the cue stick parallel to the rail will squirt the cb into the cushion, and the shot won't work. But shooting "table side" spin (left english in the video) with the cue stick angled away from the cushion works just fine. The shot can...

I made a neat video a few years back that addresses a similar shot, though closer to the pocket...

Yes sir. But I have to believe winner breaks is definitely an advantage for better players. If the better player snaps off several racks in a row with winner breaking, the weaker player will likely never be able to catch up. At least with an alternating break format the weaker player has a...

Depends on your tip width. If you are aiming a 12mm tip so that the middle of the tip is lined up to center cb, then you move it "half a tip" to the right (the tip being 12mm, half is 6mm), you are now applying half a tip of right english. The left side of the tip will be lined up to center cb...

I believe most good players probably don't pay much attention to exactly where their tip is going to strike the cb, meaning the actual contact point between tip and ball. Instead, they simply aim 1 tip or half a tip or a tip and a half from ccb, whatever distance looks right for the given shot...

I agree 100% with all of this, except the part of 10 to 20% error. I certainly didn't mean to insinuate that's it's okay to be off 1 or 2 millimeters when striking the cb. I was just saying that it typically won't be as disastrous on most shots unless your cue is jacked-up/elevated, or...

I remember watching an Allison Fisher YouTube video where she and Gerda Hofstätter were taking questions. This was one of those questions - cb or ob last?? Both said they normally look at the ob last. The exceptions (when they focus last on exactly where they want to strike the cb) are...

I knew all along that Bill was saying he sometimes likes to use his strong dislike of the CB's deflection path to help aim certain shots. 😉 I get a bit antipathetic myself at the cb's deflection path when it surprisingly leads to a pocket after glancing off another ball by accident. But...

Yes, right. And in this game, what you see happening is what matters. For close shots, the quick massè/swerve created by top side spin has an obvious sharper/larger curve effect than when using bottom side spin, so it creates a different path from CB to OB. It looks like more massè because in...

It can be surprising just how much the slight natural elevation of the cue causes the cb to massè on close-up soft to medium speed shots. Of course using low side spin can also cause the cb to massè, but it's usually not as much as when using top side spin, unless you hit the low spin with the...

The top right spin squirts the cb left, but it has more massè/swerve on it, compared to the low left shot. Still, it lands where it needs to land. The "low left" shot squirts to the right, then slightly swerves back, striking the ob a touch thicker, but it spins across the face of the ob...

This is the primary goal of Poolology - to help train the mind to recognize the overlap or "fullness" of hit needed to pocket any particular cut shot. The fractional labeling is not important, other than to provide a foundation for lining up the shot. From there it's a matter of visualizing...

HAMB. Simply put, you just keep doing it over and over and over until you've missed enough times to finally allow your mind to develop the correct alignment for that particular shot. It's trial and error programming. Having an approximate alignment for the shot, (based on your best estimate...

You are correct. Some shots are off. The primary goal of the system is to help you develop a feel/eye for pocketing balls. Some shots, due to simplifying the system into straight lines, end up not being perfect. In fact, they could be off by 3 or 4 degrees. But the system still provides...

Keep in mind that the exact angle to the pocket is NOT the angle you get when you actually cut the call, due to collision-induced throw. The Poolology system provides a slight overcut to compensate for throw, but the system is not perfect. There are limitations, as shown in this video...

The Poolology book is not that complicated. It's a simple tool that works very well for the vast majority of shots that come up on a pool table. But the system has its limitations. For the 8ball shot, the system does not work. This has been addressed here and on YouTube. As the alignment...