Shuttleworth: Introducing the HUD. Say hello to the future of the menu.

Dynamically changing the weights of commands ("bubbling"?) certainly has its uses. But like the thing google does, it will dig you further and further into your rut, whether it is optimal or not (a local maximum, if you like).

For example, imagine a user copyediting text who searches for "delete". She will find a mass of commands, and for some reason pick "delete word". Because she has to delete a lot of these, she uses it again and again, reinforcing the preference for this command. A potentially more useful "delete sentence" command will be demphasised, as well as the even more apropos "delete clause".

Ok, now we need "users who picked this menu item also liked ..." There's probably a glut of patents to cut through.