the cosmological argument Flashcards
what is Aquinas’ third way based on?
- observation
- making it a posteriori and inductive
what is Aquinas’ third way?
- the argument from contingency and necessity
how is Aquinas’ third way expressed today?
P1- everything can exist or not exist if everything is contingent
P2- if everything’s contingent, then at one point there was nothing
P3- nothing can come from nothing
C1- something must exist necessarily, otherwise there’d be nothing
P4- everything necessary must be caused or uncaused
P5- series of necessary existence cannot be infinite
C2- there must be an uncaused being
C3- this must be God
what is a contingent being?
- if its existence is dependant on something
what is a necessary being?
- something which cannot fail to exist
what is the first cause?
- the uncaused beginning of all other things, initiating all other things
what does Russell argue the third way commits?
- the fallacy of composition
what is the fallacy of composition?
- the fallacy of inferring something is true of the whole from the fact its true of the part of the whole
what does Russell say about the fallacy of composition?
- we cannot assume that just because we can explain the existence of parts of the universe, we can explain the universe as a whole
what’s a quote by Russell?
“the universe needs no explanation, it is just there and that’s all”
what does Hume suggest exists as necessary existence as a criticism?
- the universe
- It conforms with the principle of Occam’s Razor
what is the principle of Occam’s Razor?
- if there are competing hypothesises, choose the one that makes the fewest assumptions
what does Russel suggests the universe exists as?
- a brute fact
- this is the simplest explanation of why the universe exists as an unexplainable brute fact
what would you reply to Russell when he says the universe exists as an unexplainable brute fact?
- science works on the assumption theirs no brute facts, otherwise science wouldn’t work
what are weaknesses of the cosmological argument?
- commits the fallacy of composition(Russell)
- we cannot show the existence of any animal is logically necessary(Hume, Russell)
- the universe itself may be the necessary being(Hume)
- the universe exists as a brute fact(Russell)
- whys there only one necessary being?