One of the lost arts of the chess board is that of adjournment analysis. In the days before computers we used to adjourn games after the first session (normally 40 moves and 4 or 5 hours) and then continue them after dinner or on a separate day. And between the sessions it was customary to analyse the adjourned position as well as possible, recruiting what help was available.
There is an interesting chapter on adjournment analysis in The Art of the Middle Game by Paul Keres and Alexander Kotov, with this particular chapter being written by Keres. Alexander Kotov also discusses is in Think Like a Grandmaster and here there are some wonderful insights.
Kotov suggests that collective analysis tends to be inaccurate, something that was confirmed by my own experience. He suggests that an initial examination with friends can be a good thing, but after that you should work out everything on your own.
These days everything would be checked by a computer of course, but the idea that collective analysis tends to be inaccurate is interesting. I think that a lot of different voices will necessarily create an atmosphere in which participants want to outdo each other, and without their own game being at risk. It’s a classic case of too many cooks spoiling the broth, with one highly motivated cook being far more effective.
How can this help the improvement process? Essentially in immunising us against believing the unknowing collective and seeking instead to be independent. Your own ideas may not be right but thinking them through yourself and putting them on the line you learn something if they are refuted.
Here meanwhile is a funny video about receiving advice: