This is where I disagree. I honestly can't believe that people can reach working age without realising that some people communicate / react differently.

Remember, the MBTI is designed to be vague and positive - just because it says something about you, doesn't mean that's how you actually feel.

"Knowing" the MBTI (which can change during the day let alone years) is a shortcut, but no more so than saying "How much detail do you want me to go in to?" or "Do you mind if the report is late?"