Deism. The idea that a deity "wound the key that drives the universe and let it go". This deity created the universe, but does not interact with it.

Deism is much harder to address than theism. It rejects the notions of supernatural events and of holy scriptures, making it a much more rational belief system than theism. These rejections also mean that deism, much like atheism, has no real doctrine or dogma. All of these things are definitely a more reasonable way of looking at the universe than theism. However, the basic premises are still flawed.

First of all, it has not been demonstrated that it is in any way necessary - or even possible - for the creation of the universe to have an intelligence behind it. After all, intelligence is an emergent property based on incredibly complex interactions of chemicals in the human brain. We cannot yet even say it exists elsewhere in the universe. But we do know that it arises out of measurable physical reactions grounded in naturalistic physical principles. Why then is it asserted that an intelligence can exist separate from these principles? To exclude it from requiring these principles to exist in the first place is merely making a fallacy of special pleading.

Secondly, many deists also assert that "Reason" (capitalisation theirs) is the basis for their beliefs. However, by the classical definition of the word, someone who uses reason is rational. And there can be no rational justification for the belief in a creator deity, even a non-interventionist one. An application of Occam's Razor on the opposing arguments can show this.

With deity1.1 It is possible for something to exist outside a universe
1.2 It is possible for something that exists oustide a universe to possess traits that exist inside a universe
1.3 A thing exists outside a universe
1.4 This thing possesses sentience
1.5 This thing is capable of action
1.6 This thing possesses power sufficient to cause a universe to come into existence
1.7 This thing possesses knowledge sufficient to cause a universe to come into existence
1.8 This thing possesses desire sufficient to cause a universe to come into existence
1.9 This thing possesses the intention to cause a universe to come into existence
1.10 This thing takes he action necessary to cause a universe to come into existence
1.11 This universe comes into existence

Without deity2.1 A universe is capable of coming into existence without a deity
2.2 This universe comes into existence

Both arguments explain the fact of the existence of the universe. Occam's Razor recommends the one that has the least assumptions in explaining this fact.

Finally, deism has one last point it comes up against. If a deity does not interact with the universe with supernatural events, only natural ones can be evidence of it's existence. Natural events occur as consequences of the physical properties of the universe they are in. What, then, distinguishes this non-interventionist deity with one that does not exist? Nothing does.