I don't think the PC is going away, I think it's evolving, in that everything is being connected, you may not one day need big box sitting on your desktop to get work done. Perhaps, you just have a central system, or a media unit, and you interact with the cloud to get software loaded? YOu might yuse kinect gestures plus speech recognition to navigate and write your word document, and you send it off via e-mail, no need for postage, etc ... The PC as we know it, hasn't disappeared, it's just everything is becoming some variant of the PC, whether it be your cellphone , your TV, and so on ... the basic premise is still there, the power of personal computing, but the means to do so and the number of devices that interact in that medium is what is changing.