John Gruber talks about the “Save” dialog as an example of friction in software: that required step that annoyingly sits between you and what you want to accomplish. Then what about this one as an example of friction? Makes me think that the smaller the friction is the more annoying it is, because under a certain level it could probably be eliminated altogether; typesetting machine friction instead creates an hard to solve problem, and as such a very fascinating one. Typography is even more Black Magic after watching this.