*Trying not to make a joke*
you could take advantage of it too, though. For example you may see your opponent play a somewhat bad move and fail to punish it. Later you see that the move is actually fine.
Generally, though, you should have more best moves than other moves (excellent, good)
Check out this game report, no mistakes, no blunders, only a few inaccuracies. ~95% accuracy for both players. Pretty good right?
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Now let's look at the actual game
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It's just a bunch of stupid moves where on move 25 everything is on the back rank for both players.
If both you and your opponent play a dull game with few tactics, then it's possible to get a high "accuracy" score even if you both played badly.
What new players should know, is that if you're new, this tool will help you find tactical blunders quickly... but that's all it's good for. Yes strategic errors will make the eval bar drop too, but the risk for new players is that it will criticize you for not playing some deep idea (like you would have been just in time to prevent the d5 break if you'd played a 5 move sequence), while ignoring the fact that you played like a total idiot overall (as in the game above).
Especially for beginners, approaching a position with good concepts, and good habits, will help cure a lot of bad moves by eliminating them from consideration completely. This analysis tool can't tell you that your entire mindset or habits are wrong.
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Anyway, I had the idea for this topic after reading yet another "I'm a 1000 rated player who plays 30 second chess, check out my game where I got >90% accuracy, why was my accuracy so high?"