[22 June 2021] Day 22 of fmco* in Malaysia

Imagine you are attending a talk and the speaker says something that is factually wrong. Or you are in a conversation and the other person is clearly saying something based on a wrong assumption. Or someone tells you that something cannot be done in a certain way although you have been doing it successfully all this time.

What do you do? Sometimes, I encounter these situations and am not sure if I should speak up or not?