Na igen, az a sok gagyi open-source cucc (imadom az altalanositast! ;), erthetetlen, hogy manapsag (2006!) meg vannak cegek akik sajat termekeiket ilyen vacak alapokra epitik:
"Introduction to Mac OS X Technology Overview
Apple is the first major computer company to make open source development a key part of its ongoing operating system strategy."
vagy legyen inkabb ez:
"With its open-source core based on FreeBSD 5.0 and the Mach 3.0 microkernel, Mac OS X is the best Macintosh operating system ever for UNIX users."