There seamed to be an effort to discredit the idea of keeping records. I did not see it as a positive contribution, or a contribution at all.
We cannot intelligently breed our birds without a scale. We can play pretend, if we please.
Livestock breed weights are a fundamental part of their definition. The weights also act as an anchor of sorts.
There is a natural tendency and drift to return where they come from. If there is not an actual effort to maintain size, then they do drift back toward mediocrity. Large breeds do not stay large just because they are supposed to. Bantams tend to trend larger. They do not stay small just because you want them to. Everything drifting towards mediocrity, and that is the natural current. We have to push back against the current to maintain size.
It is a use it or lose it reality. It is much easier to lose size than it is to gain it. Once it is lost, it is very hard to get it back. You do not have to do anything to lose it, but to continue doing nothing to keep it.
Many of the best breeders keep good records. You get to a point, if you get involved enough, that it is hard to remember exactly what you did with who two/three years ago. If a troublesome fault pops up and becomes problematic, you will want to know it's origins. If you only have eight hens and one cock, it doesn't matter anyways.
I like to track the weights until I get to know a strain. Afterwards, it is just spot checks, and a final weigh in. I am going to track the qty. of eggs, and I will weigh the eggs that get set in the incubator (or don't). I will now what I have.
There is a number of things that I scratch down, but I am not good at keeping up with all of it. I am not a good record keeper, truthfully. But it is not helpful to imply that they are not a good idea. They are, and it should be recommended rather than discouraged.
All of the master breeders that I know anything about keep good records. I have a friend in my area that goes out on the yard with his book in hand as if it is part of the routine. He is not new to breeding, and he takes his craft seriously.
Numbers do not lie. People do. Impressions do. Ideologies do. The bare, cold, hard numbers are honest. Concerning production, I do not pay any attention to anyone that does not know their own numbers. If they do not know the numbers they are not breeding for production. They certainly do not know if they are going forwards or going backwards.
One thing that is certain among many uncertainties, if we are not moving forward with our birds, we are certain to be going backwards. Many do not even know that they are (a natural result of not knowing), and to most people it will not matter. They will just buy more later, but that is not breeding. That is just feeding someone else's work.