Everyone knows that holidays are designed to get people to rest, take a moment for oneself (and family) and come back with a fresh insight. I'm wondering if some of the teething nonsense we see in Yosemite is not linked to this bad example the very CEO of Apple is showing his staff. Rest and creativity go together. Too much creativity leads to necessary rest, no rest hinders creativity. And this percolates down to looking after little details, those details that distinguish "good" from "fantastic". So let's face it, if the CEO does not take holidays, why should a junior developper taken any ? And hence if Apple staff has not "breaks", "holidays", "vacations" because their CEO is not giving a lead, then i'm not surprised of some abysmal errors we can see in Yosemite today. Tim, you are not "irreplaceable", take your time-off, set a positive example to all, and come back with that "fresh look" that we seek from Apple.