Epistemology

Question 1

What is a
Lexical Definition?

Answer 1

The way in which the term
is used within a language community
or the general meaning.

Question 2

What is a
Real Definition?

Answer 2

The nature, essence, and
reality of the word or phrase.

It is a Real Definition
IF AND ONLY IF
Necessary and Sufficient
Conditions are met.

Question 3

What is a
Necessary Condition?

Answer 3

A condition
“Q” is necessary for “P”
if it is impossible for
something to be “P”
without being “Q.”

Being an animal (Q)
is a necessary condition
for being a monkey (P).

Question 4

What is a
Sufficient Condition?

Answer 4

A condition
“Q” is sufficient for “P”
if it is impossible for something
to be “Q” and not “P.”

Being a grandfather is a
sufficient condition for being a father.
You must be a father
in order to be a grandfather.

Question 5

What are the three conditions that philosophers consider to be necessary and sufficient for
“S” to know “P.”

Answer 5

P must be true

S believes P

S’s belief must be justified

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Also called the Justified
True Belief Account (JTB)