Disagreement and fights

A time when i had a fight with my friend about a disagreement was when me and my friend were playing soccer and i kicked the ball and it looked like if i made a goal but my friend was arguing that it wasn't a goal. I disagreed to what he said because i knew the ball didn't went over the backpacks but he was saying that it went over the backpack. We were arguing for a long time that i said "You know what I'm going to stop fighting because we don't know who is right or not so lets just not count it as no goal" and he said "alright then but you take out then".Now we play like good friends having fun. This reminds me of Achilles and Agamemnon because they fight for something that is not worth fighting and they are disagreeing a lot while at the end nobody is going to be right because there is no 1 tho prove that someone of them is right. This happens to almost everybody and it also happens in a lot of movies.