[chroma]

I doubt Gates has any hidden motive behind his statements. He's just saying something he believes to be true, while trying to make sure others understand him. Why would he care about getting sympathy from laymen? He's the richest person on the planet. He's got more important stuff to do, like sparing millions of people from disease, poverty, and hunger.

[camillomiller]

Then it's even less understandable why should he muddle the waters with an ill conceived analogy like the "ribbon around a hard drive" one.