File Surfing

Dasher (see [link]) is an character input variant geared for use by disabled persons. The characters are on the right, in boxes sized according to the probability of them being used. They drift to the left (speed detemined by horizontal mouse position) and can be nudged up and down with vertical movement of the mouse. Every character touched by the mouse is input. The system is very speedy once mastered, and while the easiest movement (mouse hard right) will only yield the character combination with the highest probability, every option remains open, during the whole process. (Edit: I just tried. Seemingly, // Kate. Are Prons,' said // is the most likely beginning... but the system learns, according to the developers)

I propose a similar app for browsing the file system: yanking the mouse to the left will bring you to /, with all the main folders arranged to the right, sized according to their use-probability, shifting the mouse to the right speeds up their movement towards the mouse, and brushing over any of them will open up another column of possible folders/files, enabling you to surf through the whole tree. At any stage a right click will make the current selection active and the app will now lead you through a similar tree of possible actions for this selection. After selecting a file, this action tree opens automatically.