voice commands are already in use, ie for CD player in cars "disk 3, track 5, play", I remember that voice recognition for typing letter was common enough at one time, "Dear Mr. Smith, I am writing this letter in order to....."; moreover, blind users receive voice replies, and Microsoft already has quite as good system that I used for people with poor site that spoke out the place or icon that was highlighted. "Explorer express, inbox, mail, dad's letter, "Dear son, happy to have had your mail today...".
Anyway, my point is see that this present day system is a bain to the mainstream, power consuming, space taking, and slow by comparison, I would like to float this alternative idea as I have done now. Last point, one would still be able to attatch the mouse, keyboard, and screen when needed for such this as visuan reconfirmation of mails, photos and the like. It is a software, development idea, the resulting small box would be smaller than a laptop I think.
Idea given, maybe not clear enough, what are the drawbacks and pitfalls please also feel free to add on to the idea please.