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I'm guessing the distribution of reviews was bimodel. Ideally, people should use a 5-star system in a way that it provides a normal distribution. Most content should fall between 2 or 3 stars.

But it doesn't actually work that way, 4 star uber drivers get kicked off the platform, 2 star Amazon products suck, 2-3 star movies suck. 4-star movies are okay.

As such, I think we can conclude that people don't actually know how to use a star rating system and we should just get rid of it.

I wonder if letter grades would be the way to go in relevant countries. Most people have internalized what a “C” means pretty well, even taking grade inflation in to account. Hell, that’s the whole reason 10 star rating systems are bad, as people treat 7 like it should be average and 5 is a failure.

I think it's quite obvious that the vast majority of selections would have been 1 or 5 stars.

I regularly see people having trouble with doors or elevators, so it wouldn't surprise me.