he's a regular poster.
Who had 2 years experience running a programme of it for 300 employees of an oil company who had been conned into paying for a package.
A complete waste of time and money. Fortunately they eventually saw sense and stopped doing it
Based in part on some of Jung's sillier ideas and in larger part on the 'enneagram' and other ideas from early in in the twentieth century occult revival
It's about as scientific as astrology. It does at least make money for the company that promote it.
There's a good article here about it:
vox.com/2014/7/15/5881947/myers-briggs-personality-test-meaningless
Here's a good quote from the article about it:
"a technique long used by purveyors of astrology, fortune telling, and other sorts of pseudoscience to persuade people they have accurate information about them."
Even Jung himself didn't intend that his ideas on human characteristics be used to group people into types.
At least it makes some people feel good in the way horoscopes do.