<i>I think the creating OS X is in the same league as creating UNIX or Linux. Sure, Jobs wasn&#x27;t a coder like Ritchie or Torvalds, but it&#x27;s not like they didn&#x27;t also have a lot of help.</i><p>&quot;Hacker&quot; News at its finest. By similar reasoning, Windows NT et al. is there too--and honestly, probably should be beyond, given the great effort put into backwards compatibility.<p>Part of the genius of Torvalds (aided, arguably, by ESR and other open-source proponents) was the creation of a truly distributed development model.