This strikes me as the right answer. We're not really sure yet. What if you can do input via brainwave headsets at 100 wpm in 5 years? Not impossible; you can t

This strikes me as the right answer. We're not really sure yet. What if you can do input via brainwave headsets at 100 wpm in 5 years? Not impossible; you can type via brainwaves, right now. Tablets could become nearly magical in less than a decade.