tderz: In this thread on GoDiscussions I tried to explain the following concept:
(please note that the letters in this diagram are not in order of value;
it does not mean that cut d would get the smallest result, in fact, I think that a ponnuki e would enable Black to go into direction f , which is one of the largest remaining open areas. In comparision, I estimate the capture of the 3 stones on the right quite small, as it has no follow-up.)
The Concept
This reminds a bit of children going directly for the Marshmallow, not being able to wait for future benefits ( http://www.danielgoleman.info/blog/2...est-revisited/ ) Remember, you could only get one of A to D, and of course OPPO can and will chose only to allow you the smallest. In the meantime, all the ataris, strengthed OPPO a lot and your own cutting stones at a and b are filling of eyes. Kyus play this atari-frenzy way on tactical level ('Atari-atari, vulgar play'). Dan players like me try to avoid this usually at all costs, but strategically, say in the opening or in running fights, I am committing probably the same mistakes, seen from a higher view.
Now imagine another scenario, where you correctly estimate the values (A>B>C>D; this is a prerequisite) and understand the principle:
The incorrect way often goes like this:
Now you also strenghtened OPPO, but you are compensated with the biggest return, and, after all capturing something is still gote :-) Sometimes it may be even best not to cut at all, leaving all this as aji, doing other moves, and letting defend OPPO in gote, while you get the value of an average move in return.
The principle is very simple, however seeing the follow-up and estimating their values, can be difficult.