My entire point was that it is NOT in fact a mere over simplification. Even if we follow what's being encouraged and not mind the details and focus on the core idea, even so the core idea it attempts to communicate is something that hinges on an assumption hidden behind the mechanics of the metaphor. That being that personality lies on a continuous spectrum. There may very well be discrete types, with variation among them.
What you actually seem to be doing is assume that a continuous spectrum is the only way it can be because people don't fit archetypes (and because of the rest of empirical evidence you attached about your experience). However as said, that is absolutely not true and there can very easily still be discrete types without making people 100% archetypal, by simply making the categories looser. If only a few fundamental traits are what define a type, then all other possible human traits that we can conceive of become free parameters that shall introduce internal variation. Let's even look at such an example of a psychological trait, gender (left or right handedness is also of course still relevant as a common mental categorization that has evolved to be discrete but this should be even more relevant). 97% of people are clearly heterosexual, so it is pretty much concrete (either M or F). Obviously all females or all males do not belong to an archetype, as we'd wanted from a discrete categorization (though they certainly exist for a reason), but still the distinction is very much discrete.
Correct, my illustration was an over simplification of personality. If you push an illustration too far, beyond what it was meant to illustrate, then it won't work.
My illustration wasn't meant to explain or teach personality theory, but highlight cases where a person doesn't fit their archetype perfectly. I don't think anyone - after reading their personality type profile could say "Wow... 100% correct. Not one thing was untrue!" but maybe many would say "That explains everything" - some people still can't decide which type they are. If you gather a thousand of any type into a room, you're guaranteed that they're not all the same, but they'll be quite similar in some way.
And so, I assume your point is that good system & theories (like string theory) with general and simple principles on a fundamental level, should be able to explain how different parts interact and function together in a complex system? Personality and the human brain are highly complex systems. A linear colour spectrum obviously doesn't explain its complexity.
No, I delineated my motive to include that in the beginning itself, that is to explain my definition of what is a system, which wasn't even able to be communicated. Nevermind it I suppose, it really did just confuse things further as I feared. What
is to be gathered from it though, is that you might want to pay more attention to my wording because now its confirmed that either my way of thinking or communicating is not fully compatible with yours. My style of talking is more on the 'mathematical'/pedantic side so everything I say is carefully chosen (so basically, use your Ti is what I'm saying; +verbal IQ>visuospatial IQ).
Not all types will "ALWAYS" do what their type inclinations supposes that they'd do. There are those who are rather borderline on certain traits and for them, it's genuinely hard to distinguish exactly which category they belong to. Sometimes I'm nice and considerate, sometimes, I'm actually quite inconsiderate and obnoxious. Another INFJ labelled me as an INFP once and was merely observing that I was saying a few things that seemed typical of an INFP. Some think I'm an INTJ. Some think I'm an archetypal INFJ. I feel akin with INTPs and ENFP. I know INTPs who are quite mature and considerate of others' feelings.
I understand the immediate reaction to distance from saying "always" in a discussion about personality, but if we word our principles correctly and keep them general enough we can do so. In particular, if the statement that is claimed to be always true is itself a probabilistic statement. Here first of all many of the examples you gave were of
specific behaviours.
For the second, let's consider you being nice sometimes and inconsiderate at other. Now why was that so? It is intellectually disingenuous to leave it as just a quirk of behaviour, an inherent randomness attached to everything we do. Things only ever seem random because we do not fully understand the underlying mechanics, either that or lack information about prior states, that is it (well, except and except only quantum mechanics, that too only for now).
We do cost/benefit analyses every time we act; when you were less considerate perhaps you were thinking that the logical problem here is too glaring to ignore, or perhaps you didn't care about the person as much. Since the processes are subconscious, it seems random to you. We also have personal principles that we build upon through Ti or Fi that may conclude, through their respective logical or value judging processes conclusions stereotypical of the other side. So the result you see is that INTPs are being mature but really they are following a 'theorem' that they derived using their logical process itself, that theorem just happens to say something different. Other than this, there can be external factors that affect us, like say I just watched a movie about spreading love or something and now I'm in an emotional mood which makes me temporarily more considerate before I return to my default. But those are, as said, external factors. So yeah we will need to change the wording a little to "I will always prioritize logic, given all else being equal, or given no external influence is acting upon me" but that's it. Now it's quite impossible to have truly no external influence at any one point, so perhaps this is the source of the apparently inherent (but reduced due to the cost/benefit + personal principle thing explaining a lot of it) randomness. But now that we have identified the source, we can separate the two atleast mentally and see the general underlying principle.
So that explains randomness, but how does the universal behaviour principle come about? For T>F people like me, we've to always logic our way through things (and vice versa for F>T), like every time I would be about to act on Fe my Ti would definitely do a does this make sense check before letting my Fe through (if I'm not stressed) and if it's not it will internally resist. It's just too omnipresent to not.
If a complex system as personality and the human mind was as simple and linear as a colour spectrum, then enough systems could cover each others blind spots. I've tried to mapped out several systems to see where they overlap and find the closest equivalents (but don't fit perfectly). e.g. DISC, 4-Temperatments. Grouping the 16 personalities into those 4 quadrants. Then you have Enneagram etc. Big 5 and then NERIS that's trying to amalgamate MBTI & Big 5.
Of course, but any one particular feature, if it was like a continuous spectrum like the color spectrum, and there were two systems that categorized within that as shown, then really no blind spots would be left. No blind spots doesn't mean that you now have the ability to map the entirety of a personality, its a purely objectively definable statement. You can cut the slices as finely as you want and create as many middle spaces as you want, sure, but if you place like a lower bound on variation within a type depending upon how much phenotypical variation it creates in actual behaviour (which here would correspond to how left or right you can go with little to no perceived difference in the colour perceived by the brain) then it'll not be a problem.