defining knowledge Flashcards
what is the tripartite definition of knowledge?
Justified, True, Belief
what are the three types of knowledge?
ability (I know how)
acquaintance (I know of)
propositional (i know that)
what are necessary conditions?
conditions that are required for something to fit a definition
—> ‘unmarried’ is a necessary condition for batchelor
what are sufficient conditions?
set of conditions that fully cover every requirement of a definition
—> unmarried man are sufficient conditions for bachelor
what are Gettier cases?
problems demonstrating that JTB isn’t a suitable definition of knowledge, they aren’t sufficient conditions
describe Gettier case 1
- Smith and Jones interview for job
- Smith hears interview say “I’m gonna give Jones the job”
- Smith knows Jones has 10 coins in his pocket
- Smith forms the Justified True Belief that “the man who will get the job has 10 coins in his pocket”
- But Smith gets job, not Jones
- Smith realises he coincidentally has 10 coins in his pocket too
its JTB, but isn’t knowledge because it was just lucky
describe Gettier Case 2
- Smith has a Justified Belief that “Jones owns a Ford”
- Smith doesn’t know where Brown is, he has the Justified Belief that “Either Jones owns a Ford or Brown is in Barcelona”
- By coincidence, Jones doesn’t own a Ford
- By coincidence, Brown is in Barcelona
- Smith’s belief is true but not the way he thought it was
name four alternative definitions of knowledge
No False Lemmas
Reliabilism
Virtue Epistemology
Infallibilism
what is the No False Lemmas definition of knowledge?
knowledge =
Justified
True
Belief
thats based on no false lemmas (beliefs)
name 3 strengths of No False Lemmas
— strengthens justification, preventing falsity
— deals with original Gettier cases
— allows past examples of “knowledge” that have been disproven to no longer count as knowledge
name 2 weaknesses of No False Lemmas
— doesn’t deal with modern Gettier cases (Ginet’s red barn)
— we might not realise that current knowledge is based on a false lemma: it leads to scepticism?
what is the Reliabilist definition of knowledge?
a true belief caused by a RELIABLE METHOD (‘justified’ is too vague and subjective)
Reliable
True
Belief
a reliable method is something that produces a high percentage of true beliefs
give 3 strengths of the reliabilist definition of knowledge
— potentially better and more specific than justification
— allows children and animals to have knowledge without justification
— Nozick gets around Gettier cases
give 3 weaknesses of reliabilist definition of knowledge
— original version (before Nozick) fails to deal with Gettier cases
— potentially just as vague as justification
— ‘reliable’ still leaves room for error: most processes COULD be wrong in some cases
Nozick’s reliabilist solution to Gettier problems
a process is reliable if the belief formed from it being wrong changes your mind