They're fallible in just about as many.
As you will have noticed, the world is full of people arguing, and mostly they're using words to do it. A lot of what they're arguing about is words, too. Yes, it's the bombs and bullets that cause the physical damage, but behind them are the words, words, words.
Look: all language systems are ambiguous and inadequate. Just think, you can't get a gorilla down on paper, let alone a god. No one, however important, can say exactly what they mean - and even if they could then the chances are that some people are going to misunderstand them.
Which makes makes playing Follow My Leader a very very dangerous game indeed.
Thing Probably Not To Do Today: play Follow My Leader. The Old English form of this word was lǣdan, and is related to līthan to travel.
*No, not literally a million ways: it might only be one hundred thousand three hundred and forty nine ways. Or two million and six, for all I know.
Do feel free to start a numbered list.