[quote]pat wrote:
[quote]forlife wrote:
[quote]kamui wrote:
[quote]forlife wrote:
Pat, deductive arguments are only true or false IF the assumption of non-contradiction is universally true. If not, deductive arguments could be both true and false, or neither true nor false.[/quote]
and if it is the case, all our discourses meaningless, all our arguments are useless.
and we should just shut up.
but we won’t.
Even if we can theoretically conceive that the basic principles of logic are ultimately false, we will continue to speak, think and act as if they were essentially correct.
Because we are bound to them.
“your argument is logically valid, but, you know, logic itself may be wrong, therefore you still may be wrong” sound very much like “you are correct, i know it, i have no logical way to contest it, but i will NOT admit it, ever”.
edit :
now, i’m not saying that the cosmological argument is logically perfect and can not be contested.
it certainly can.
you could use the kantian argument stating that “existence is not predicate”, for example.
or you could work with propositional logic, rather than predicative logic. [/quote]
Ultimate uncertainty doesn’t mean all arguments are equally likely. We can still consider logical arguments and test scientific hypotheses, to determine where they lie on the probability continuum. We just can’t say definitively that something has 0% or 100% probability of being true.
As a general rule of thumb, logic and science work very, very well as tools with both practical and theoretical utility. The point is not that we should discard them entirely, but that we should remain appropriately humble in our search for truth.
[/quote]
There is no truth with out logic. Everything is or isn’t and nothing would mean anything. Logic is just an equation. A metaphysical frame work. With out deduction everything fails, math fails science fails, the whole shootin’ match fails.
I admire the balls of saying logic doesn’t really exist and bucking the establishment and all, but it does exist and there isn’t a whole lot you can do about it.
http://en.wikipedia.org/wiki/Deductive_reasoning[/quote]
That’s exactly the point!
How can something be both contingent AND noncontingent?
How can something be both completely white AND completely black?
How can something be both true AND false?
Common sense tell us that truth is BINARY. Either something is true, or it isn’t. And no, we’re not talking about relativity and frames of reference per quantum mechanics. We’re talking about universal contradictions that are BOTH true.
Common sense isn’t always right. It works for most of our everyday experiences, just like Newtonian mechanics work for most of our everyday experiences, but sometimes it gets things wrong.
We’re talking about universal paradoxes actually existing. Just because they’re rare doesn’t mean they don’t exist or are impossible.
Read the list of paradoxes in the link I provided earlier.
In every case where a paradox exists, deductive logic fails, because it inherently assumes that contradictions are impossible.