What does a person’s MBTI type actually tell us about them? I was just wondering because it seems like everyone takes it to mean different things, some people almost completely disregard it and then others are like “oh, an estj, he will like this kind of bread.”

MBTI is a theory that attempts to describe how the human brain functions: how it takes in information, processes and stores it, and how it spits it back out in an interactive format.  Everyone has the same eight functions for doing all these things, but the order of priority each function receives is what gives us the sixteen different personality types.

But we clearly aren’t only sixteen people repeated over and over again, so there’s also a huge number of other factors going into our personalities – genetics, upbringing, economic status, education, gender, race and culture to name a few.

To use your example (ie, I have no idea if the ESTJ bread-thing is actually a thing), I would find it unlikely that every ESTJ would have the exact same favourite kind of bread, but it would be much more likely that ESTJs are the kind of people who would value having a favourite kind of bread.

Riding the ENTJ question. What is your opinion on INTP’s are we detached

Well, you have Si (grounding in reality) and Fe (connecting to people) as your third and 4th functions.  So in the sense of detaching socially and emotionally?  It seems likely that INTPs with poorly developed inferior functions might seem detached.  Whether you actually are, though?  I would have no way of knowing that.

(I don’t know, though, detached is a really weird way to describe people.  Detached from what?)

In my case, INFPs with poorly developed inferior functions (Si, Te) usually come off kind of divorced from reality, which is its own kind of detachment.

Probably every type that only sticks to their first two functions could be said to be detached from whatever the other two would give them.