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PHL105Y5 Study Guide - Tyrant, Deductive Reasoning, Everytime

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Diana Raffman

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Philosophy Class Notes Semester 2
Jan 4, 2010
-the science of TO KNOW
-it is the claim how to know something
-well look at question of TRUTH
-well look at JUSTIFICATION
-difference between knowledge and belief
Knowledge Claims
1. I know my friend John very well knowledge by acquaintance, requires
more than a description, direct contact, some kind of familiarity simply
cant be capture just by talking, familiarity with objects, OBJECT
2. I know how to speak English Competence knowledge/ skill knowledge
3. I know that UTM is in Mississauga- very special, I know that is
followed by fact/proposition or a statement that can be T or F,
propositional knowledge, PROPOSITION is either true of false,
Philosophers are interested on this.
Focus on next 6 weeks is claim on propositional knowledge
Ex. S is person, P is proposition/statement/sentence, either T or F
1.S knows that P
-necessary sufficient conditions
a.S believes P
Believes = Psychological certainty is a function of the subject
b.P is True
1.has to be Public and objective its not a private thing
2. Independent of how many believe it
3. has to be eternal it has to be properly INDEXED (time, year, location, etc)

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c.S is justified in holding P
set the bar high by saying P is certain ie Probability of (P) is 1 >
if its Very Probable how high are we going to set the probability
3 is epistemic certainty, it is justified if you have REASONS
how tight the connections are
WEDNESDAY bottom number pg 141,142,143,144,145, short 3 page article,
brain in a vat. There is a philosophical point lol

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Lecture 2
January 6, 2010
1.Knowledge by Acquaintance
direct and personal
2. Competence Knowledge
- ability to perform a skill
eg. I know how to swim
3. Propositional Knowledge most basic kind of knowledge that we have
S (person) knows that P(proposition)
Proposition is the idea or concept that a statemet expresses. Proposition are
the beares of truth.
Proposition thought content, bearers of truth
Statement the way you say it
B. Necessary and sufficient conditions for Knowledge:
A (person) knows that P (proposition)
1.P is True
2.S believes that P
3.S is justified in holding P
Knowledge include believing
Beliefs dont give you knowledge
Problem of justification how much should you know to JUSTIFY?
Certain = probability = 1
Justified belief does not always count as knowledge
Descarte method is justify is FOUNDATIONAL METHOD
Truth is objective.
We dont want truth as subjective.
Once something is true, its always true.
Something IS true even if its not believed in < THE GOAL!
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