
Originally Posted by
Expat
I don't think type changes, simply because I have never observed or experienced it, over decades. My personal opinion is that those who refer to type changing are confusing changes in personal circumstances, and in superficial behavioral traits, with change in type.
As for subtypes, I'm not sure that subtypes even "exist" to the extent that I think that types do. Sometimes I think that subtypes are just a very convenient way of describing people who are of the same type but do have some differences in behavior. I also refer to subtypes, quite often, as if they existed but in fact I'm not sure.