Their proof that their model is correct seems to be that it ends up creating a 80:20 distribution. But many processes do that, that's why it is such a famous ru

Their proof that their model is correct seems to be that it ends up creating a 80:20 distribution. But many processes do that, that's why it is such a famous rule. So I don't think they can simply conclude their model is the correct one. I don't think anybody disputes that luck is also a factor.