[Sammi]

MBTI is pseudoscience without any empirical backing: https://en.wikipedia.org/wiki/Myers%E2%80%93Briggs_Type_Indi...

Really the only personality test with any strong empirical backing is the Big Five test: https://en.wikipedia.org/wiki/Big_Five_personality_traits

All other personality tests reduce down to the Big Five when you try to test for co variance.

[spyckie2]

The exercise is about finding a language that you can use to describe your shared values. For that use case MBTI is perfectly fine.