Defining "postmodern"

Rene' Descartes, "I think (actually 'doubt'), therefore I am." -- 1600's A.D.
- with this, most every idea for the following 400 years was able to be "validated."

post-Descartes question (asked sincerely, not in aggression), "Why you and not me / why your thinking and not mine?" -- 1940's+ A.D.
- with this, post-Modern philosophy pulled the rug out from under the last 400 years.


Today, perhaps, "What was on the rug?" -- 2006 A.D.