User blog comment:Nitshade/Fringe/@comment-5909633-20130901111515/@comment-4961635-20130901152329

We categorise different abilities so that people can focus on one thing at a time and can be specific when talking about it. Psychokinesis is the ability to mentally affect an object's energy and/or configuration of matter. So every kinetic ability is categorised under Psychokinesis which has two sub categories: ErgoK and MaterioK. Which these have even more categories. A tidy place is a tidy mind.