The logic is not "if people buy it, it must be good", but more "if people buy it, there must not be something else that they can buy that gets them what they want for less".
I think that's within the working definition of "good", but even if it isn't, I think my concerns still apply. It might on average be true in certain narrow circumstances, but there are so many exceptions it conceals at least as much as it reveals.
wpietri|5 years ago