On a related note, it often happens that I’m with a friend, and we encounter a third person known to my friend but not to me. If my friend does not immediately introduce the third person to me, I frequently jump in and introduce myself quickly, just in case my friend has not made an immediate introduction because he or she has forgotten the third person’s name. It saves everyone an awkward moment. My friends will frequently confide after the fact that they had indeed forgotten the person’s name, and they were grateful that I introduced myself. I have yet to be scolded for not giving a friend the opportunity to make the introduction themself.