It's a heck of a lot easier to shout non-unique names to identify someone though in most situations... I mean, I'm pretty sure no one wants to have to yell at their kid "76995cdc-9825-4b13-b66a-a60b26b6cc41! Stop drawing on the wall!"
"Is it the government's position that when the country is engaged in a war, that the power of the executive when it comes to wiretapping is unchecked?" asked 83-year-old Judge Harry Pregerson, one of the court's staunchest liberals, of a Bush administration lawyer. "The king can do no wrong, is that what it comes down to?"
The finest eloquence is that which gets things done.