So
(x) : x is a possible entity. the more complicated x is the less likely it is to exist controlling for other evidence.
(x): x is a possible entity. the more intelligent x the more complicated x is, controlling for other properties.
God is maximally intelligent.
:. God's existence is maximally unlikely unless there is other evidence or unless it has other properties that make its existence maximally more likely.
(Assume intelligent to refer to the possession of general intelligence)
I think most theists will consent to (1), especially given that its implicit in some of their favorite arguments. (3) They consent to, unless they mean "God" as merely a cosmological constant, or first cause. In which case we're having a completely different debate. So the issue is (2). I'm sure some of the cognitive science types can give evidence for why intelligence is necessarily complicated. There is however, definitive evidence for the correlation of intelligence and complexity. Human brains are vastly more complex than the brains of other animals. Computers get more complicated the more information they hold, etc. It might actually be worth making the distinction, between intelligence and the holding of data. It is a lot easier to see how the more information something contains the more complicated something is since one can just compare two sets of data, one bigger than the other, and see that one is more complicated. Presumably, God needs to contain information on everyone's behavior, the the events that happen at any point in time, prayer requests etc.
Btw, is there a way for me to us symbolic logic notation in xml?
I think you are looking at this from an evolutionary point of view? Then it makes sense to make statements like "more and more complex states are less likely" (i.e., they take more time) and "intelligence increases with the complexity" (of organisms).
Outside this context, though, I have trouble understanding what is meant by "complicated" or why "more intelligent" should be more complex. In fact, you could skip right from (1) to (3) -- most theists would be comfortable asserting that God is maximally complex. However, is response to (1) they might counter with -- if something does exist, you can't use its improbability to negate that it exists.
I've often had half-finished LW post ideas and crossed them off for a number of reasons, mostly they were too rough or undeveloped and I didn't feel expert enough. Other people might worry their post would be judged harshly, or feel overwhelmed, or worried about topicality, or they just want some community input before adding it.
So: this is a special sort of open thread. Please post your unfinished ideas and sketches for LW posts here as comments, if you would like constructive critique, assistance and checking from people with more expertise, etc. Just pile them in without worrying too much. Ideas can be as short as a single sentence or as long as a finished post. Both subject and presentation are on topic in replies. Bad ideas should be mined for whatever good can be found in them. Good ideas should be poked with challenges to make them stronger. No being nasty!