Keep in mind that this is just a blog post. I don't usually follow Cal Newport's blog but in general, academic blogs are meant to be more informal and just expl

Keep in mind that this is just a blog post. I don't usually follow Cal Newport's blog but in general, academic blogs are meant to be more informal and just exploring different ideas without the rigor of a peer reviewed journal. If he put this stuff in a published book I would agree completely. Sadly it's par for the course for pop science writing.