This is a big one. Seeing two different things as the same thing. It often feels sudden and jarring and weird. And somehow comforting and right and possible.
The Nature of Order: ornamentation and function.
~ (no link)
Thinking in Systems: ". . . most people already know about the interconnections that make moral and practical rules turn out to be the same rules."
~ http://newforum.droqen.com/index.php?msg=2116