Ladoga,

I have been wondering that myself but in the past I have assumed it was under the influence of M$ software that the world has come to believe that no setting on a computer could be applied without rebooting it and that no system error could be small enough to not justify a complete reinstall of the OS. (Some data-loss may appear TM)

So, when people are unable to find themselves a wiki to get informed, I usually do not start evangelizing my zelotic beliefs of not rebooting, reinstalling and whatnot. I just point out the info in the public domain that is at hand and leave it at that.