Boidhre wrote:My point is, if you're going to study fuseki, restricting your study only to the fuseki you play is going to be problematic when you get to higher levels.
Bill Spight wrote:Restricting your study only to {fill in the blank} is problematic.
Kirby wrote:This idea kind of makes sense, but I wonder about efficiency. For example, is it possible that you get more bang for your buck studying tsumego for an hour than studying joseki for the same time?
Generally, that is true, which is why the saying about studying joseki and losing two stones in strength.

I got a couple of joseki books when I was 4 kyu - 2 kyu, but I did not seriously study joseki until I was 2 dan, and I have no regrets about that.
Kirby wrote:If so, it would still be ideal to study everything wothout restriction, but given a finite amount of time to study in life, why not focus on areas that are more efficient for helping you to achieve your goals (eg. getting stronger)?
Bantari wrote:I think it depends. Since we can't possibly study everything all the time, choices have to be made.
If you lose your games because of your weak reading - study tsumego, its more efficient.
If you lose your games because of opening blunders - study joseki and fuseki, its more efficient.
Rinse, repeat.
A major problem with focusing your study on what you need to most, or where you are weak, is how do you know? Very often in the Big Question Mark section on Sensei's Library someone will ask, What do I do in this situation? Very often the answer is, Don't get into that situation.

The important errors came earlier. Left to their own devices, the players who ask those questions would study the wrong things, because they do not know where their problems lie.
Now it is possible to become a high level amateur dan player with glaring weaknesses, because you have other strengths. There are many examples, both in the East and West. So if you want to concentrate your study on one area or a few, why not?
But if you think, as I do, that having glaring weaknesses is not so good, then study everything. For one thing, doing so will help you to identify where you need to concentrate your efforts.
Bantari's point about studying what causes you to lose games is a good one. Something that I repeatedly advise is trying to determine the last game losing play. Not so easy, but it is a good exercise.