well... I dunno about YOU, but *I* get to irreducible simplicity through design (and trial and error, and redesign, and observing the sometimes happy result of accidental developments, and stealing ideas from others, and...)
but then, I design fairly simple machinery, and only as a hobby now.
A description of evolution through variation and natural selection. The part of the process you call "design" is merely a collection algorithms arrived at through previous generations of trial and error, and preserved in the culture.