Ok here goes...
Alright I will try to explain what I'm talking about now....
John had it right in his last post, the important difference is not having to manually adjust and rely on your intuitive judgement which most people will second guess anyways if they haven't already second guessed their aimline. Most angled shots when lined up correctly look wrong.
Now back to the explanation.
When using BHE, for any amount of English you have a specific offset. The bridgehand will ALWAYS be in line with the original no english shot, so if your initial aim is correct, so is the subsequent shot. Not because the amount of squirt is necesarily perfect, but because the amount of squirt coupled with CI Throw between the CB and OB equalize. So that it's understood, in my experience and from what I've been shown by one of the best players arguably Ever, BHE will result in potted balls, without further adjustment so long as the original aimline is true and the stroke is true.
Now on to PE. PE refers to shifting on the Parallel plane from the original aimline to add spin to the CB....
Of course in most situations this doesn't work because squirt will change the angle, so manual adjustment of the aimline is necesary in most situations. Not all situations though. If you doubt that last statement setup a shot from six to eight inches and aim straight on it then use PE without adjustment. it will drop. Now because manual adjustment is necesary for most shots, you will not end up with the same shot in most situations as you would with BHE.
Ok if you look at a shot where you line up with center ball and then rotate from your bridge(use BHE) your bridge hand is still in a perfect line with your original aimline. If you use PE this is not the case. From what I know of PE (and I used to use it exclusively) you line up on the main line then shift on a parallel plane to the point on the CB that you want to hit for spin, then you make minute adjustments for squirt throw etc. because you've moved your bridge hand, it is no longer on the original aimline. i.e. there is no constant, it is all based on feel and experience, so you will be off center on most shots. The reason that this works, (but is not as consistent), is because it is feel based. Your subconscious is doing all of the necesary calculations for you. What is actually happening that allows it to work when the bridge is not on the original aimline is that because it is not on the original aimline you have just like john said a greater mass behind the shot making more of the energy transfer to forward motion as opposed to side spin.
Because there is less side spin there is less collision induced throw between the CB and the OB, allowing the angle to be off center and still make the shot. The problem with this method is that you can't be absolutely sure you are on the right aimline and will often second guess yourself and try a last minute adjustment that will throw off the shot. The same thing can be said of BHE except that once you except that it WILL work you can avoid second guessing yourself, where as with PE you always have to do the manual calaculations making second guessing yourself a possibilty at all times.
Yes it is possible that for a shot with the same amount of english using PE you will end up with the same shot as with BHE making them kind of one and the same, but that's in a perfect world. In the real world, it will most often not be the same even though the shots can still be made. It is because there is more variability with PE that it is an inferior method to BHE and IS different in 90% or greater of situations, even if the difference is too minute to notice.
It is in some circumstances and with many people more and with some people most circumstances different enough to make a substantial difference and decrease your consistency.
I hope that answers the question as to how PE IS different to BHE.
Alright I will try to explain what I'm talking about now....
John had it right in his last post, the important difference is not having to manually adjust and rely on your intuitive judgement which most people will second guess anyways if they haven't already second guessed their aimline. Most angled shots when lined up correctly look wrong.
Now back to the explanation.
When using BHE, for any amount of English you have a specific offset. The bridgehand will ALWAYS be in line with the original no english shot, so if your initial aim is correct, so is the subsequent shot. Not because the amount of squirt is necesarily perfect, but because the amount of squirt coupled with CI Throw between the CB and OB equalize. So that it's understood, in my experience and from what I've been shown by one of the best players arguably Ever, BHE will result in potted balls, without further adjustment so long as the original aimline is true and the stroke is true.
Now on to PE. PE refers to shifting on the Parallel plane from the original aimline to add spin to the CB....
Of course in most situations this doesn't work because squirt will change the angle, so manual adjustment of the aimline is necesary in most situations. Not all situations though. If you doubt that last statement setup a shot from six to eight inches and aim straight on it then use PE without adjustment. it will drop. Now because manual adjustment is necesary for most shots, you will not end up with the same shot in most situations as you would with BHE.
Ok if you look at a shot where you line up with center ball and then rotate from your bridge(use BHE) your bridge hand is still in a perfect line with your original aimline. If you use PE this is not the case. From what I know of PE (and I used to use it exclusively) you line up on the main line then shift on a parallel plane to the point on the CB that you want to hit for spin, then you make minute adjustments for squirt throw etc. because you've moved your bridge hand, it is no longer on the original aimline. i.e. there is no constant, it is all based on feel and experience, so you will be off center on most shots. The reason that this works, (but is not as consistent), is because it is feel based. Your subconscious is doing all of the necesary calculations for you. What is actually happening that allows it to work when the bridge is not on the original aimline is that because it is not on the original aimline you have just like john said a greater mass behind the shot making more of the energy transfer to forward motion as opposed to side spin.
Because there is less side spin there is less collision induced throw between the CB and the OB, allowing the angle to be off center and still make the shot. The problem with this method is that you can't be absolutely sure you are on the right aimline and will often second guess yourself and try a last minute adjustment that will throw off the shot. The same thing can be said of BHE except that once you except that it WILL work you can avoid second guessing yourself, where as with PE you always have to do the manual calaculations making second guessing yourself a possibilty at all times.
Yes it is possible that for a shot with the same amount of english using PE you will end up with the same shot as with BHE making them kind of one and the same, but that's in a perfect world. In the real world, it will most often not be the same even though the shots can still be made. It is because there is more variability with PE that it is an inferior method to BHE and IS different in 90% or greater of situations, even if the difference is too minute to notice.
It is in some circumstances and with many people more and with some people most circumstances different enough to make a substantial difference and decrease your consistency.
I hope that answers the question as to how PE IS different to BHE.