I'm not saying we don't need those things for all things, but I am saying we don't need those things for this thing....
What I find worse abut this is suddenly you, one of the members that brings documentation and outside sources to threads regularly all of sudden says we don't need those things when it is clear you simply cannot find any to support your view.
Some things are so basic that there just isn't any documentation... and this issue is one of 'em. If it becomes an issue, you can be damn sure there will be some documentation on it.