Speaking as one of the oldest "old farts" here, I learned a very long time ago that to press a point just to prove you're right can hurt feelings, can cause bad blood and sometimes a lost friendship.
There is a right way and a wrong way to do and handle most things.
No one likes to be made to look the fool or stupid so a little tact and a bit of diplomacy in making your point goes a long way.
Most people don't mind being shown that they're wrong if you do it right.
But if all else fails, just be nice and let it go.