I thought that some would know.Anyway,it is tecnique of aiming.It is a high level pool,if you play right way.It is one of the most important things in pool and hardest to learn wrightly.There are no many people,players talk about it and no many play that way.You could hear something about in one old pool school DVD from Jim Rempe and Loree Jon Jones(POWER POOl).They said few words and show it on the table and explaine a little.
So.when you aim in the center of cueball for example, your dominant eye is under the center of the cueball.When you shot english,eye should be under the place where you aiming english,not center.But because cueball curves because of english, it moves out of line of aiming and 1/10 seconds after comes back on that line.Depend of stroke and power.So,because all that it is hard to accomplish that.Imagine this,cueball is on the breaking line at the center and you are aiming with left english into a rack.You would hit the rack at your right side of the rack.Because playing left english you push cueball into a right side.Playing right english you are pushing the cueball to the left.Unless,you play very easy.
So,when you aim cueball your stroke line has to be straight.How it could be straight you have to bee upright(or vertical) on cuebal.So, when do you play english your cue during aiming and especially shooting has to be straight,vertical,upright on cueball.But it is very hard to accomplish that and from some angles you cannot see properly when you are upright.So,the most of players don't do this.Those who do are on higher level.Left handed players have it most often naturally.Everything with this techinque is easier.Balls are pocketing easier because they rotate in direction to pocket(ahead rotation) and fall easier in pockets.Cueball has more power than and you can play angles with cueball you never thought you will be able to play.If you look some of the very best players you can see everything I am talking right now and if you look more carefully you will notice cueball is moving way different.
Because of curving cueball during english your eye and brain started to be confused unless you are not used on it.Because, of english and aimining system your dominant eye isn't aiming the place where should hit the object ball but the other spot and that confused brain and eye.Depend on your stroke is how much cueball are going to curve.As better you are your stroke is more consistent and than curving line is more consistent as well.
It is hard topic!!!!But believe me it is one of most important and it will take you in parallel universe when you feel it.
I'll give you one question!!!!!
Imagine!!!You look pool table from above.Cueball is on the left rail on the break line frozen.Object ball is at the same rail frozen but on the other side of table,where rack is.Both balls are in line. and frozen to the rail.Middle pocket is between them.So,what are you options????You have to make the object ball.Both balls are frozen to a rail..How can you make this shot???Which english have to play????Could you make the shot with both of english????What are your opinios??????I am very curious to see how do you thing guys and what do you know.Anway,whith using of these aiming methods you become aware of what you can do on a pool table.It is like learning.You learned everything,but you don't understand the topic actually.You did memorize memorized it all,but not necceasary understand it.But,once when you understand it,it becomes yours for all life and gives you more oportunity in every next shot.Actually,it is hard to explain but when you catch it it is a new dimension,for sure.
WHAT ARE YOUR CONSIDERATIONS???
They simply adjust for the squirt and don't know they do this naturally.