i like your passion though, describing things as "utterly useless" even if you absolutely cannot prove that to be the case. grandstanding. someone pay attention to this guy. he needs it desperately.
And yet, I can prove it both thru myself and thru others I know!
I do not care to do it, but all it would take to prove it is having myself play a dozen games as White and a dozen games as Black in the following openings:
French Defense
Queen's Gambit Declined
Queen's Gambit Accepted
King's Indian Defense
Closed Sicilian
Italian Game
Grunfeld Defense
Modern Benoni
Scandinavian Gambit (3.c4 c6 4.dxc6 Nxc6)
Reti Opening
If I played 240 games, 12 with each opening with each color, regardless of results, and you looked at whether the side I was playing showed signs of having a cohesive plan, that demonstration of understanding was shown, you would see that in my games in the first 6 openings listed. The moment you start looking at those last 4 openings, you would likely see a lot of errors on my part, drawing games I should have won, losing games because I have no idea what I am doing, etc.
We are assuming these games would be classic time control, like game in 2 hours each.
i don't know any other word to describe what i am supposed to do with the information. maybe you can invent one.
I believe the word you are looking for is right there in my previous post.
Understand!
Understanding and Memorizing are nowhere near the same thing!
Again, take the following 2 lines:
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 Qc7 8.Qxg7 Rg8 9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 dxc3 12.Qd3 d4
1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 c5 8.Ne2 O-O 9.O-O Nc6 10.Be3 Bg4 11.f3 Na5 12.Bxf7+
The first is a line (not the only line) of the French Poisoned Pawn. The second is the Seville Variation of the Grunfeld, named after where the match was played between Kasparov and Karpov.
I have "memorized" two lines.
However, I can explain IN WORDS the ideas for BOTH SIDES, and also explain WHY other moves are wrong (excluding different variations, like 7...O-O and 7...Kf8 are both fine as well - I have played them both), such as 10.cxd4?? (And hence why the pawn is poisoned). I can explain follow-up ideas for both sides. I UNDERSTAND the French Defense.
The same cannot be said about me and the Grunfeld. I can reel off a half dozen to a dozen lines. It does not mean I understand it. The moment someone deviates, barring outright hanging a piece, you ask me what is systemically wrong with the move played? BEATS ME! You play 12 moves of the Seville - Great! Now what? Just because I memorized 12 moves means nothing if I am clueless how to follow up the next 30 moves.
If this does not make sense, then try another comparison.
In a history class, Understanding it means you know what the people were going thru during the Civil War in the United States. What the underground railroad was. What life was like for those trying to escape thru the underground railroad. The pain and suffering that many went thru. Many did not survive not because they were caught, but rather starved or dehydrated themselves to death. This is just one very very small piece of the war.
A memorizer would simply say the war started April 1961, ended April 1965, Harriet Tubman lead the underground railroad and all were happy to escape. Think of this like memorizing as opening because this person clearly did not understand what went on with the underground railroad, what he said was false, memorized a few dates, and failed history class like I would fail if I continued to play the Grunfeld!