TCK tendency to over-explain things
One interesting aspect of being an adult TCK I rarely hear about is a tendency to explain things that borders on the pedantic.
I've been thinking about this and come to the hypothesis that it's due to the uneven education that results from being shifted from country to country, and being schooled across multiple languages. There are certain things which are common sense to natives that are not acquired due to a TCK upbringing. In the same vein, there are many things we take for granted that are not general knowledge.
Over time, I've noticed in myself and other aTCKs a tendency to explain things which may be common knowledge simply because there were gaps in our upbringing and oftentimes it was taken for granted that we'd know something we didn't.
It's not about assuming other people are ignorant, but simply having a poor sense of what people do know and frequently being surprised by the things others don't know which seem like basic knowledge any adult should have (from an aTCK perspective).
What are some of the things other's haven't known that surprised you?
What are some bits of knowledge others take for granted that you had to learn much later on in life?