I can't help but think that maybe Jobs just didn't have a positive review of the book. I've never read it but the most helpful reviews on Amazon are not favorable.
http://www.amazon.com/New-Kind-Science-Stephen-Wolfram/dp/15...
http://www.amazon.com/New-Kind-Science-Stephen-Wolfram/dp/15...
"We sent him the book and he said, "Oh, I saw some excerpts, and I'm going to decline writing the foreword." I don't know why because I'm nice to him, so there must have been something he didn't like."
http://seattletimes.nwsource.com/html/businesstechnology/200...