suo wrote: It's almost like ... we're the same species.

Yay! Now we are on enough of the same page that I can better explain what I am about. I also agree that there are good reasons to act as if we do believe in free-will, as well as some good reasons to act as though we do not. Empathy or compassion being the good reasons to act as though we do not, and the avoidance of nihilistic depression and/or the maintenance of vivacity being the good reason to act as though we do.Ego wrote:Despite my belief that we do not have free-will, I believe there are good reasons to act as if we do.
This is why I come out so strongly against disempowering beliefs. "Whether you think you can or you think you can't, you're right." People who think they can't do things that they can do, just need to have their neurons changed.
Maybe the main difference in our perspective is that I think it is a few more levels more complex than "just do it" , although I also do believe that environment (very broadly concieved) and genetics (understood to be greatly complex) can influence behavior (also very broadly conceived) can influence chemicals (also understood to be greatly complex and obviously inclusive of sex hormones) can influence neuronal arrangements (also understood to be greatly complex) and this chain can be sub-chained and caused to flow in different manners than those that are most typical.
I see the MBTI as sort of a map of where you are likely to find yourself if parked in neutral in neutral environment, and I see the MBTI model as a very rough, waaaaaay too basic, sort of recipe book for what you might choose to do if you want to be able to "perform" somewhat differently. For example, if I wanted to improve my emotional functioning, it would make the most sense for me to consider the behavior of the "type" that is most like my type except for the one changed variable of improved emotional functioning. It wouldn't make sense to attempt to immediately radically change myself towards one of the highest emotional functioning types which also varies in other characteristics.
However, I also agree with Jacob's take that sometimes some variations on this kind of transformation are not easy to the point of "unlikely to be accomplished under the constraints of within this lifetime." For example, I truly wish that I could be a very good singer like many other humans in my family and social circle, but as my DD33 "kindly" reminded me recently, I am approximately at the fifth (or worse!) percentile of inability to reproduce tones/notes through the utilization of my vocal cords. It would probably take years of diligent training just to get myself to the level of "people don't head directly for the exit of the karaoke bar" when I make an attempt at "Hotel California." And this also holds true for some innate characteristics/abilities related more to temperament. The caveat here being that accepting one's limitations is not an excuse for entirely abandoning potentially rewarding environments or opportunities. For example, maybe, just maybe, I do have enough rhythmic potential to play the tambourine. And even somebody who is quite introverted could potentially find a social role to inhabit in party situations if they were essential to, for example, gaining access to scientific equipment. IOW, innate tendencies to not necessarily pose complete limitations to getting what you want.
There are even means by which any human can change their tendencies in term of wanting what they want, although this may feel more "alien" depending upon factors contributing to sense of self. For simple example, testosterone supplementation and/or engaging in behaviors/situations known to boost testosterone levels will generally tend towards making a human feel more sexual and also want more sexual activity. Smoking old school pot often tends to make humans want food more strongly. Taking amphetamines makes humans want food less strongly and want to move or work more strongly. Strength training tends to increase testosterone levels and taking amphetamines might increase desire to engage in strength training behavior. etc.etc. etc. Obviously, many of these possibilities I have listed are not the most "healthy" or "natural" approach to change, but due to overt dosing being measurable, it is easier to see their short-term efficacy.
Another very simple example would be that I have done genetic testing that indicates that I inherited the maximum preference for sweet tasting food from both my father AND my mother. Out of the approximately 50 traits for which I have genetic results, this is the trait for which I have the maximum tendency. Luckily, and perhaps not coincidentally, I have no tendency towards diabetes or related metabolic syndromes, and neither does anybody else in my family. Therefore, my personal rational approach towards losing weight if that is something I wanted would follow a different pattern or "recipe" than that of many other humans, because I will never not want sweet food no matter how long I brute force diets excluding sweet food, but I can successfully substitute hard candy or seafood or fruit for mega-muffins loaded with kcals which I might mindlessly consume when all I really want is the crunchy sugar top. Similarly, although a much more complex matter, the fact that my genetic analysis indicates near maximum Competitiveness combined with near minimum Ambition (what??) would likely contribute to a more "eccentric" career or accomplishment path than many other humans. IOW, the more information I obtain, the more predictable my path becomes, but also the better my ability to tweak (not radically alter!) it becomes. I believe that when humans do exhibit radical change, this is likely due to previously having been confined to an inhibiting environment which limited growth and expression. I don't think lack of belief in ability to effect radical change is very contributory to inability to effect radical change, although it certainly may be contributory to inability to effect minor or even moderate change from one's own basis.