What you don't know about Objectivism fills volumes that you have not -- and probably will not -- read; volumes that philosophically outclass even Aristotle in epistemology, metaphysics, ethics and esthetics.
This thread, for instance, is about concepts -- a matter of epistemolgy; an absolutely eye (and mind) opening subject within the Ayn Rand book titled "Introduction to Objectivist Epistemology."
Believe it or not, I've presented you with a pearl.
"Some books are to be tasted, others to be swallowed, and some few to be chewed and digested." Francis Bacon, "Of Studies"