“You’re being unreasonable!”
One or more of you may have had this directed at you. But what does the speaker mean by it?
Presumably the speaker believes that the listener is not acting according to some given standard. However, if the speaker had an argument to that effect, the speaker should’ve presented it. Hence, all the above statement means is that the speaker has run out of arguments and has resorted to name-calling: being unreasonable is another way of saying crazy.
Now, though, the situation has reversed itself. It is not the listener that has acted unreasonably, but the speaker. Without an argument that concludes that the listener is being unreasonable, then it is not the listener that is being unreasonable, but the speaker. The speaker is name-calling, when, by the speaker’s own standards, an argument is required. For what else is reasonable but to present an argument? So, by saying that the listener is being unreasonable, in essence the speaker is declaring themself unreasonable.
But, yet again, the situation reverses itself. If a person has run out of arguments, and makes a statement to that effect, then he or she is being perfectly reasonable. This returns us to the beginning! Therefore, by making a claim about someone else being unreasonable, you paradoxically show that you yourself are and are not reasonable, such that if you are, then you are not, and if you are not, then you are.