Spearthrower wrote:You can't trust your mind
: non-sequitur.
I can trust my hands to hold onto things, my penis to extrude urine or rise to certain occasions, my hair to grow - so why can't I trust my mind?
Evolution has shaped these organs to deal with a real physical world. The order of that physical world is learned by the brain via observation and experience and by anatomy and physiology via evolution.
You can't justify a rational mind, you can't justify a rational universe in absence of a god.
Non-sequitur, circular reasoning, special pleading.
Firstly, the sentence is problematic: what exactly is meant by 'justify'? I don't need to justify that which manifestly exists. I will need to assume that they mean 'justify the existence of'.
1) You can easily justify the existence of a rational mind in the absence of god - it's one which reasonably correctly models the external world - it corresponds well with observable external reality. Traits which allow an organism to best navigate the external world through to reproduction can preferentially benefit those minds which best represent or model the external order of the world around them, and these traits can be heritable. Irrational beings, ones which modeled the external incorrectly, would be (far) less likely to survive than ones which can.
Also, how is it that God gets free pass on this? If God is a rational mind, how is its existence justified by the same rules? God cannot be a god to God. Whence cometh God?
2) You can actually justify the existence of a rational universe in the absence of god. You do it by imagining an infinity of universes, many of which fail to be ordered (whatever definition you choose to take for that), and some which are ordered. We live in an ordered one. Were this one not an ordered one, we wouldn't be alive to contemplate this.
More significantly, if the universe were the product of personal being with wants, needs, desires, hopes, plans, expectations, dislikes, and assorted other personal characteristics, then the universe would not necessarily be orderly - its morphology could be whatever God wanted it to be. If God were real and It created our universe, then God could have created it diametrically opposite in every way and you would still be obliged to call it 'orderly' if you could exist within it. Ergo, your god contention has no merit and is self-defeating.
I could explain how we don't posit unnecessary entities, but given the demolition of the contention above, that would itself be unnecessary. In fact, Muslims very nearly understand this notion - they have it written into their most sacred utterance:
there is no God, but Allah!3) Why are modern evangelizing Muslims using Christian apologetics?
https://en.wikipedia.org/wiki/Alvin_Pla ... naturalismIn Plantinga's evolutionary argument against naturalism, he argues that the truth of evolution is an epistemic defeater for naturalism (i.e. if evolution is true, it undermines naturalism). His basic argument is that if evolution and naturalism are both true, human cognitive faculties evolved to produce beliefs that have survival value (maximizing one's success at the four F's: "feeding, fleeing, fighting, and reproducing"), not necessarily to produce beliefs that are true. Thus, since human cognitive faculties are tuned to survival rather than truth in the naturalism-evolution model, there is reason to doubt the veracity of the products of those same faculties, including naturalism and evolution themselves. On the other hand, if God created man "in his image" by way of an evolutionary process (or any other means), then Plantinga argues our faculties would probably be reliable.
My question for these chaps is: if you were convinced by Plantinga's argument, why are you not now Christians?