In the Dutch newsgroup, nl.internet.www.ontwerp, a group on website design, a discussion moved to the old "Gates stole the Windows idea". I remembered that I read somewhere that both Gates and Jobs visited the Xerox research center, Palo Alto (PARC).
My opponent had never heard of such a visit by Gates and even doubted my statement since he could not find it using Google. Well, I could, and someone else too, using a similar query.