That is also my takeaway from the book - people work differently, and being aware of that can make you more effective at communication. I didn't even manage to

That is also my takeaway from the book - people work differently, and being aware of that can make you more effective at communication. I didn't even manage to take the book very seriously because it was so overly... arrogant in its presentation. "If you do X, you're red. Red people do Y, Z, U, V. Remember the times someone did W? Red person." Every statement presented as unquestionable fact, but none of them sourced (but anecdotes abound). It's unfortunate that people (all of Sweden, apparently?) seem to have gotten carried away and based lives and decisions around what is evidently just the author's musings.