Critical Thinking Defined

A colleague proposes the following definition of "Critical Thinking":

Critical Thinking = Skepticism + Objectivity + Rigor

This is quite appealing, since one can examine what breaks down if any component is missing:

And besides all that it's an equation, which of course I like!

(Hmmm ... maybe those should be "*" instead of "+" between the terms? and cf. Critical Thinking (2009-12-03), ...) - ^z - 2010-02-10