# KEHOME/knowledge/TheoryContextSymposium/belief.txt
# 1999/4/28
# new syntax Nov/12/2002

#======================#
# Belief vs. Knowledge #
#======================#

A person's view of reality is the result of interpreting entities
and their relations.  Depending on the method of interpreting,
the result is called knowledge, error or belief.

Knowledge is an identification of a fact of reality.  Knowledge
is certain (true) because identifying is based on the evidence
of perceptual observations and logical reasoning.  (To identify
is to perceive, select and describe a group of existents and a
relation between them.)

An error is a misidentification of reality.  An error is false
because it is the result of incorrect logical reasoning.

A belief is a guess about reality.  A belief is uncertain (true or false)
because guessing is based on insufficient evidence, or disregarding
contradictory evidence.


in my KR language
=================
proposition := man do recognize od existent done
proposition is either knowledge or error or belief

identify is correct recognize
knowledge := man do identify od existent done

misidentify is incorrect recognize
error := man do misidentify od existent done

belief := man do guess od existent done

All input to Knowledge Explorer is assumed to be knowledge, e.g.:
	at view=myview
	sentence1
implies
	myview := I do identify od existent done

When the input explicitly mentions knowledge or belief,
Knowledge Explorer automatically creates additional views, e.g.:
	John do know od {sentence2} done
	John do believe od {sentence3} done
produces (in addition to the 2 lines of knowledge above):
	know_John := John do identify od existent done
	believe_John := John do guess od existent done
	at view=know_John {sentence2}
	at view=believe_John {sentence3}