> Its purpose is to keep people out of ruts, for which it works.

It’s purpose is alliviate people of their disposable income for which is also works. Same for personality tests. There are people charging huge sums for going to companies and telling them half their people have purple personalities and the other half mantenga and that’s the core reason why their bus ones hasn’t yet reached the incredible synergy that will make them the next Google or Apple!

I think this is very good insight. We all use tools like astrology, myths, totems, philosophy, routines, heroes/icons, politics, culture, chiropractic medicine, religion, etc. to help us navigate through life. There is no right or wrong, there is just preference.

I know several people who are very dependent on these personality definitions as a framework for their self-identity, and I would never suggest to them that they were wrong to do so. It makes them happy.

That's a really interesting point of view; what you say is like astrology or such tests are deliberate designs of people (probably, of higher minds in a given society) that regulate or benefit life; but still, I think this'd be rather one of effects of practicing astrology or other non-scientific inquiries than the main cause of them. I'd like to see whether what you claim relies on a theory or research.

Wouldn't the result cause a person to continually reattempt a certain type of career for the supposed correspondence with their personality? Or are the results so unstable they change day by day?