The future of mankind (joke)
With the plethora of wearable computers now available, one can imagine a future where computers are completely blended with our physical bodies, and instead of a keyboard & mouse we use an alphabet of sounds: grunts, chirps, clicks, and warbles to control it.
After millions of years of evolution, we might look more like this:
(beep beep!!!)
Note: different languages might lead down different paths of evolution, i.e. resulting instead in loons, cuckoo birds, and Daffy Duck!