Reading Stephen #Hawking's mind

In chapter 13 "Machines of Loving Grace" of The Universal Machine I describe a device, called the Emotiv EPOC headset, that enables you to control your computer using just your thoughts. The New Scientist now reports that the famous physicist Stephen Hawking is trialling a similar device to control his famous speech synthesizer. Currently, Hawking has been controlling his computer using small muscle movements in his cheek, but as his motor neurone disease progresses he may lose even this slight muscular control. However, he will not lose control of his mind, hence the new approach. The era when we control our computers by thought is approaching.
   On a different subject, here's a question for you? What do Charles Babbage, the grandfather of the computer, and Stephen Hawking have in common? Answer in the comments below and one correct winner will receive a free copy of The Universal Machine.