I understand, I'm just not sure at 73 , I'm going to learn to speak differently. We are all passionate about our opinions, so I never get mad over little things. Reasonable people discuss things and you always have been a reasonable person.
It probably comes from plumbing for 55 years, I speak exactly because people with less knowledge would always try to tell I was wrong about something. I'm highly intelligent when I speak of plumbing but that's the only thing I'm an expert on. AND I have been wrong before, but it was a rarity.