About that Safari update

Dear Apple,
Is it really and truly necessary for a x.0.x upgrade of a web browser to force an full-blown system restart? Think of the minutes of productivity lost for this single user. Think of the total hours lost by large corporate entities.
Oh, Safari is closely tied to Mac OS X? How very Microsoft of you, Steve.
Get your act together, gang. It’s a web browser. Updates and upgrades shouldn’t force restarts.
Annoyed Retrophisch™