responses of issues Flashcards
Alternative definitions of knowledge
philosophers have tried to come up with new definitions of knowledge that avoid Gettier cases.
Generally, these new definitions seek to refine the justification condition of the tripartite definition. True and belief remain unchanged.
JBT + no false lemmas
reliabilism
virtue epistemology
infallibilism
JTB + NO FALSE LEMMAS
It says that James has knowledge of P if:
P is true
James believes that P
James’s belief is justified
James did not infer that P from anything false
explanation of no false lemmas
it adds an extra condition to the tripartite definition. It says knowledge is justified true belief + that is not inferred from anything false (a false lemma).
example of no false lemmas:
For example, imagine you were checking the football results in the back of a Sunday newspaper, but without realising it was a paper that was a year old.
doing this, you have made a false assumption.
As a result, most of the beliefs you form as to Saturday’s football scores will simply be false in the real world.
However, if one of them happens to be true by coincidence, then we would not want to count this as knowledge either, as we do not want knowledge to be based on false beliefs that luckily turn out to be true.
does it solve gettier problem?
avoids the problems of Gettier cases because Smith’s belief “the man who will get the job has 10 coins in his pocket” is inferred from the false lemma “Jones will get the job”
The tripartite definition says Smith’s belief is knowledge, even though it isn’t.
The no false lemmas response says Smith’s belief is not knowledge, which is correct.
problem for no false lemmas: fake barns county
The belief is about the correct subject, but the believer does not know that she is in an unusual context which makes him belief seem luckily true.
In ‘fake barn county’, the locals create fake barns that look identical to real barns
Henry is driving through fake barn county, but he doesn’t know the locals do this
Henry often thinks “there’s a barn” when he looks at the fake barns
These beliefs are not knowledge, because they are not true – the barns are fake
However, on one occasion Henry looks at the one real barn and thinks “there’s a barn”
This time the belief is true
It’s also justified by his visual perception of the barn
And it’s not inferred from anything false.
According to the no false lemmas definition, Henry’s belief is knowledge.
But this shows that the no false lemmas definition must be false. Henry’s belief is clearly not knowledge – he’s just lucky in this instance.
unfinished lol need to ask andy !!
reliabilism
Reliabilism says James knows that P if:
P is true
James believes that P
James’s belief that P is caused by a reliable method
A reliable method is one that produces a high percentage of true beliefs.
explanation of reliabilism
if you have good eyesight, it’s likely that your eyesight would constitute a reliable method of forming true beliefs.
If you have an accurate memory, it’s likely your memory would also be a reliable method for forming true beliefs.
But if you form a belief through an unreliable method – ie guessing – then it would not count as knowledge even if the resulting belief is true.
advantage- children and animals
allows young children and animals to have knowledge
ie- a seagull knows where to find food
ie- a child knows when their mother is speaking
whereas other definitions imply that children and animals dont have knowledge.
ie JBT- they cant justify their belief
ie virtue- its difficult to see an animal or child possess intellectual virtues of care
however, both are capable of forming beliefs via reliable processes ie senses and so are capable of possessing knowledge.
problem- fake barn county
using reliabilism, henry’s true belief that theres a barn is caused by a reliable cognitive process- sight, thus reliabilism would say incorrectly that henry knows theres a barn even though his belief is lucky to be true.
virtue epistemology
link between a belief and intellectual virtues
intellectual virtues are about epistemic good. For example, an intellectually virtuous person would have traits such as being rational, caring about what’s true, and a good memory.
Zagzebski argues that definitions of knowledge of the kind we have looked at so far (i.e. ‘true belief + some third condition’) will always fall victim to Gettier-style cases.
situation where there is a true belief + some third condition but is false due to bad luck
Then change the situation to one where true belief + some third condition but is true due to good luck
second case won’t be knowledge, because it’s only true due to luck
reason for this is that truth and the third condition are simply added together, but not linked leaving room for the lucky cases to incorrectly fit the definition
Zagzebski’s definition of knowledge
James believes that P
James’s belief that P arises from an act of intellectual virtue
This can be shown by drawing a comparison with moral virtue:
An act of moral virtue is one where the actor both intends to do good and achieves that goal.
Intellectual virtue is similar: You must both have the correct motivation (e.g. you want to find the truth) and succeed as a result of that virtue (i.e. your belief turns out to be true because you acted virtuously).
SOSA’S VIRTUE EPISTEMOLOGY
P is true
James believes that P
James’s true belief that P is a result of James exercising his intellectual virtues
archery analogy- virtuous shot in archery has the following three properties:
Accurate, i.e. it hits the target
Adroit, i.e. the archer is skilful and shoots the arrow well
Apt, i.e. the arrow hit the target because it was shot well
Aptness provides a link between truth and the third condition that rules out Gettier-style situations where the belief is only true as a result of luck.
fake barn county: sosa’s virtue epsitemology
correctly say Henry’s belief “there’s a barn” in fake barn county would not qualify as knowledge – despite being true and formed by a reliable method – because it is not apt.
Yes, Henry’s belief is accurate (i.e. true) and adroit (i.e. Henry has good eyesight etc.), but he only formed the true belief as a result of luck, not because he used his intellectual virtues.