Thinking about this for a long time: "And that's what I'm worried about: "No user serviceable parts inside". I'm concerned the very reason tablets will take over the PC market will also mean that tomorrow's kids' experience is very different from, and I would argue poorer than, my experience when I got my first computer, a Commodore VIC 20."
And found the answer in automobiles. They are as essential to us as communication devices will be to everyone tomorrow. And yet only a few only know at least the fundamentals of an engine.
It's a problem society has to tacle by embracing STEM but it's not as problematic as it seems IMHO.