I'm Right ! No - I'm Right!

Have you ever been in a conversation where someone thinks they are right about everything ?
I'm sure it's happened to you because it has happened to me - but the question is how do you deal with a person who thinks he/she is right about everything ?

You have 2 options:
1. Continue to argue with them until you are blue in the face trying to convince them that you are right ( this post could be about you )
2. Tell them " You are right " even though you know that they are not right.

Now the question becomes if you continue to argue with them - what do you gain ? what do you lose ?
If you tell them " you are right " what do you gain ? what do you lose ?

Is it really worth it ? Is it worth the trouble ?

For me - the questions that I always ask myself for every situation is:
* What do I gain by making this decision ?
* What do I lose by making this decision ?