Being told you are wrong can feel like an attack

The defensive flare is not a character flaw, but the reaction runs faster than thought and it deserves a plan.

Beliefs do not sit in a neutral warehouse. They arrive attached to how we see ourselves and to the people who agree with us, so a challenge to a view lands partly as a challenge to standing. That is why the pulse quickens over something as trivial as which route is faster. Nobody genuinely cares about four minutes. What they care about is being the sort of person who knows the way. Recognising this does not switch the feeling off, but it does explain why the volume of a disagreement is often unrelated to its importance.

The practical version is to build a gap between the flare and the reply. Some people count to three. Some ask a question they do not need the answer to, purely to buy the time. The move that works best is to separate the two things being defended: the claim, and yourself. Say them apart, even silently. I might be wrong about the route. I am not being told I am a fool. It sounds like an artificial exercise, and it is, but the artificiality is what gives the slower system a chance to arrive.

The other half of this is being the one who delivers the correction. Almost everything about how you say it changes how much of it can be heard. Correcting someone in front of others, or with the small flourish that says you enjoyed the catch, guarantees the defensive reaction and the argument is then unwinnable no matter how right you are. Offering the correction as a question, in private, with genuine room for the possibility that you have missed something, costs you nothing and dramatically raises the chance the point survives the conversation.