KDE4's launcher menu neglects an important fact: cognition and intelligence works better when body motion and spatial interaction are involved. Unfortunately, KDE4's new menu was designed as for a 1990's cell phone: you flip through menu pages. There is no spatial extension as with classical menus dating from the early 80's. The user no longer has a spatial perception of navigating a hierarchy. You are constrained within a small menu window and have to remember what menu hierarchy you are into, ...