text: polite introduction? me and my friend were sitting on a concert hall one day and suddenly one of the lady that was sitting beside him made a conversation to him and they seems to have a good chat, so my question is: when that happened should i suddenly jump into their conversation and politely introduce myself or just stay quiet and pretend that i dont listen to them? although, as far as i know, my friend was the one who should introduce me to the person he's talking to. i think you are right, no matter how interesting their conversation may have been, your friend should have had the courtesy to stop for a moment to introduce you as you were together since the beginning, however as a demonstration of education it would be acceptable that you waited for the perfect moment during their conversation to introduce yourself with a positive comment emphasizing the good aspect of making new friends or simply encouraging their conversation.    having manners often implies having empathy with others.