Unity and Distinction

They are complementary as opposed to contrary.
Trivially any two "things" are "unified" by an act of joint observation/comparison, and are are "distinct" because there two of them in the eye of the observer.

Let me give the example of psychology for instance, is it complementary to have the mind in "parts" rather than have a "monist" view? Would it be easier to work an analytical process with with divided parts or study it holistically? (By the way, I'm sorry if my questions sound rhetorical)


I remember a thread asking, if two things are completely identical are they the same thing? But, yes fresco, it probably is trivial... (relative more like)