> Belief is Level 2. Non-belief is Level 3.
According to A. J. Greimas (On Meaning: Selected Writings in
Semiotic Theory, University of Minnesota Press, 1987), belief and
knowledge are endocranially indistinguishable (Chapter 10, pp. 165-
179: Knowing and Believing: A Single Cognitive Universe). They
may be differentiated only by the presence or absence of evidence,
which is intersubjective (able to be verified/falsified by an other) and
therefore external to (not the sole privileged per/conceptual property
of) any particular individual. In other words, the cerebral pattern for
x does not depend upon whether its holder knows or believes it (or
knows s/he knows, or believes s/he knows, or knows s/he believes,
or believes s/he believes);whether it is indeed knowledge or belief
depends upon the existence (or non) of a referent for the pattern,
located in the world we share.