Most of the times I've seen a discussion about "best *" or "favorite *" on here, it seems eventually someone tries to make a distinction between, say, the "best musician" and someone's "favorite musician." I remember this coming up particularly in a "who's the best vocalist?" thread. Someone would mention a person who doesn't have particularly noteworthy range then someone goes "lul, some people are posting their favorite singer instead of the best." Then a discussion starts about why that person couldn't be someone's "best" vocalist, then you get an answer like "they don't have the range!" Then you ask them what if someone doesn't care so much about the technical aspects and why they should be "necessary" when talking about the best singer, yet it's generally agreed that calling someone out for saying a technically simple song is the "best song" would be pretty ridiculous. Then you get an answer like "of course technicality isn't necessary, but it should be a consideration" (or something, that thread was awhile ago).
This showed up in the movie thread as well (or some thread about movies, can't remember which). Is there really any difference between someone's favorite movie and what they say is the best movie? Everyone seems to agree that different people have a different criteria for what might be the "best movie," so is any distinction between favorite and best necessary?
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While I'm making a thread I guess I might as well bring up something else I'm talking about. Say we're talking about the "best guitarists evar" and someone brings up Kurt Cobain. Ignoring the initial rage for a moment, what reasons exactly might someone feel Cobain is the best guitarist ever? The answer I hear the most is because he wrote some of the greatest songs and solos ever or whatever, but what exactly does that have to do with his guitar playing? Wouldn't that make him the greatest song writer ever? Is anything about his actual guitar playing noteworthy in any way? Is it just semantics? Is there any point in a distinction between someone's ability to write great, hooky guitar lines and someone's ability to actually play the guitar?
edit: Just want to be clear that when I talk about someone's "ability to play the guitar" I'm also talking about how well they're able to express emotion through their playing, not pure technicality.