A key aspect of productivity is to know intuitively the operation of software. This is no different from fingers memorizing the locations of keys on the keyboard -- and the reason the Dvork keyboard failed.
Companies like Microsoft and Autodesk seem determined to impede productivity of users through frequent changes to their software's user interface. Case in point: AutoCAD's Dashboard. Lasted a mere two years.
Last year: the new ribbon.
This year: the very cluttered ribbon.
Next year? Something even worse, I imagine.
Bill Fane writes...
I find it interesting that over the years we have changed from the rigidity of sequential step-by-step command-line entry, through the convenience of random-entry dialog boxes, to the ease of step-by-step wizards.