After a dozen years and nine major releases, OS X has had a full life: the exuberance of youth, gradually maturing into adulthood, and now, perhaps, entering its dotage. When I am an old operating system I shall wear… leather? The 2011 release of OS X 10.7 Lion seemed to mark the natural endpoint of the “big cat” naming scheme. But Apple couldn’t resist the lure of the “cat, modifier cat” naming p
![OS X 10.9 Mavericks: The Ars Technica Review](https://cdn-ak-scissors.b.st-hatena.com/image/square/67aa73b4249a7b64523595d38268e080fe8ece9f/height=288;version=1;width=512/https%3A%2F%2Fcdn.arstechnica.net%2Fwp-content%2Fuploads%2F2013%2F10%2Fmavericks-feature-640x215.jpg)