A PhD, like all degrees, is just a piece of paper. This piece of paper doesn't mean you'll say true things or do good science, it's just a shortcut way of letti

A PhD, like all degrees, is just a piece of paper. This piece of paper doesn't mean you'll say true things or do good science, it's just a shortcut way of letting people know "I've spent a lot of time on this." As for who know best, I'm always skeptical of whoever is less curious, and that usually depends more on the person than the education level.