http://www.lifein19x19.com/forum/viewto ... 39#p183739
There is much such theory.Cassandra wrote: I do not suppose that there is much THEORY available on "pruning leaves".
Your interesting question is relevant for everybody's study and practise.What do you need ?
What do you mean by "arrangement" and "pictures"?-- Study the result of someone more experienced than you pruning your arrangement, especially compare the pictures before, and after.
-- Practise pruning your arrangements on your own.
If you mean "positional judgement", I disagree. Many "more experienced persons" might offer their opinion, but too often without explanation. Such opinion is not better than looking through pro games with the expectation that most positions must be "good". However, maybe you mean a different kind of judgement, if so which?-- Accept that the more experienced person's judgement (that "after" has more harmony than "before") will be true in the overwhelming majority of cases.
I guess again you presume the third party to be a "more experienced person" (in the meaning of "more skillful"). My experience with third party opinions has been: Their statements without reasoning are of very little use (even if I presume their 90+% correctness) while their statements with careful reasoning or justification are very valuable. Unfortunately, such statements are rare.-- Ask a third party for their opinion. [...] Accept this party's opinion in 90 per cent of cases without thinking.
As consequence of the above, I find myself walking my own path for 90+%.-- For walking on the last few per cent of your path, ask the more experienced person for advice again.
If external advice were as good as you hope, I would agree with you. However, it is not as good. Apart from the rare really helpful advice, I benefit more by doing my own study or research using pro games, my games or inventions.
If you know better sources, share them.