@joshsusser @inthehands
I tend to think of NTs as more generalists, at least from where they start off in life. Like a stem cell, floating through the body mostly at random until it finds a place it is needed, then it differentiates.
Whereas NDs are more specialists from the start, like an already differentiated cell, randomly floating around looking for a place/role that it can function properly and thrive. (Yes there's some commentary on society built in there.)
How to parse this into traits or dimensions I don't know right now.
(But hey, yet another ND analogy for my ever-growing collection!)