The thing that has always amused me about the personality types is that everyone is all of these things and how much they are of one or the other depends on the

The thing that has always amused me about the personality types is that everyone is all of these things and how much they are of one or the other depends on the circumstances. You can change the questions very slightly and get wildly different results. While interesting in a way to understand human interactions and some form of classification of that they aren't usually something fixed, they don't really measure personality because its a whole lot more complex than these measures. Most people still believe that your peak heart rate is 220 - age when the paper that determined this showed no one actually met that at all and the variance was massive, the same is true of Myers Briggs we are a long way away from the original science with the use of these tests and since no one reads the papers they don't realise how badly its being applied.