alt Hacker NewsAny survey (as opposed to horoscopes which aren't up to user choice) can be used to convey information about a person, even if that information is what they think about themselves. "I took a survey and I'm a Slytherin" conveys plenty, and no one feels the need to point out that that's unscientific.
I get that, but I wanted to elucidate since many people think Myers Briggs is based on data and is not a fiction.