I will admit that I havn't researched this topic in full, but I often read websites and books alluding to, or even downright stating, that there is a set percentage of certain types in a country or even the world.
Basically the idea that some types are more rare than others, I suppose this could easily be true and there is a little bit of empirical evidence for it but frankly; im a little skeptical.
Or rather im skeptical of the numbers used. Ive read bits of information that claim INFJ's are less than 1% of a population, others that it is 2.1% or something. Then ive read that Se doms like ESTP's are more than 13-14% of a countries population.
The problem is that firstly, how could this possibly be representational in terms of the information and source used? And secondly that it ignores the variables of being human.
More annoyingly some people will take pride in something as superficial as how rare their type is. I personally find it irritating, it distracts from the importance of the theory, although I know some will mention that it helps understand the difficulties of certain types, but at the same time even that has this problem of excusing some people of facing up to their own faults, 'oh it wasn't your fault, you're rare, that's why you struggled'.
In any case to me rarity has nothing to do with being unique or special, if you are interested in that type of catagorisation, it has more to do with how you are as an individual within your type. That's the important part.
What do you all think?