Palmer did not make oculus from scratch.  He took what was already there and used better optics and some nice mobile screens.   Carmack was largely responsible for much of his success by helping show him its potential.  He was rounded out by Iribe who provided leadership.<p>Palmer was more innovative, sure, but Zuck showed much more leadership and vision.  Sort of like woz versus jobs.<p>As for changing the world, I think that might be a stretch at this point.