Lack of common sense."Common sense is the ability to make the right decision,QUICKLY" !!!
Another component of common sense (which is surprisingly *uncommon*), is the ability to recognize that the behavior of someone else is rarely analyzed effectively in terms of ones *own* behavior.
You have made the logical error of assuming that it is the decision making component of the pre shot period that is slowing down all slow players. This is definitely false in at least one case (myself), and I'm sure in many other cases. For me, I sometimes just can't see the shot correctly. In other words, I've already made my decision and am in the process of lining up on the shot and getting down to shoot. However, I simply cannot see if I am aimed correctly or not. Sometimes it is effortless and automatic. Sometimes it isn't. When I can't see the ball going in, I get up and try again. Sometimes it takes a few tries. I badly wish this wasn't how it is for me. But it is. And I'm going to shoot the shot when I think I'm going to make it, not rush the shot because of someone else's impatience. I don't really care how long my opponent takes to shoot. Some people simply lack patience. Lack self control. Lack composure. Perhaps they rely on various substances to regulate their level of anxiety. Smoking cigarettes, for example, may be one of the most popular options. Nothing more hilarious than watching someone fidget in their chair, can't sit still, growing impatient that I want to take more than 10 seconds to do my shot...they may even complain I'm playing slow (when in reality it is their *perception* that is off because of their baseline anxiety). The funniest of all is when they then have to go take a 10 minute smoke break in the middle of the match.
In any case, my point is that things may work differently for different people. In the gambling world, this is easy to deal with: DON'T PLAY with people you don't enjoy playing with, and shut the F up with the complaints if you choose to take on a match. If you don't know who you are dealing with, then that is a risk you are taking on as a gentleman: you may have to be irritated by your opponent without saying anything until the end of the set. In a tourney, there is a director. If you feel creating an issue out of something is necessary, then go tell the TD on your opponent. OR, you could learn to manage your own impatience and anxiety, and simply be ready to play when it is your turn.
My Master's teammate is the slowest player I know. I *like* playing against him, because I know it will be a well fought match, with no one pissing away shots because of lack of effort. Whoever wins played better, as it should be. We have each beat the other to win a trip to Vegas for singles. I like that kind of thing. And trust me...this guy plays SLOW!
KMRUNOUT