Of course, errors are not good for a chess game, but errors are unavoidable and in any case, a game without ant errors, or as they say 'flawless game' is colorless.
Mikhail TalBotvinnik's right! When he says such things, then he's right. Usually, I prefer not to study chess but to play it. For me chess is more an art than a science. It's been said that Alekhine and I played similar chess, except that he studied more. Yes, perhaps, but I have to say that he played, too.
Mikhail Tal