True, especially for ergonomic keyboards. The upside of a chorded keyboard is that it can input a lot while using just one hand, and can be fixed relative just

True, especially for ergonomic keyboards. The upside of a chorded keyboard is that it can input a lot while using just one hand, and can be fixed relative just to that hand (imagine e.g. typing while holding a bike handlebar, or, again, an aircraft control stick). Normal touch-typing requires active use of two hands, and a steady surface.