[QUOTE=Voyager]
First of all, we’re talking about evidence of absence, not proof of absence. Absence of evidence certainly never proves absence.
Second, am I understanding you to be saying that we can be more confident in the current non-existence of (non-avian) dinosaurs as compared to god because we don’t have evidence that god ever existed in the first place?
As for your question, the important factor is whether we should expect to see evidence. For life, and for a deistic god, the answer is no, so absence of evidence is not evidence one way or another. The Western god, who supposedly interacted with us, is another story.
[/QUOTE]
I’m not quite getting whether you’re disagreeing with me or agreeing with me…
We have evidence for the extinction of non-avian dinosaurs, along with a gazillion (give or take a few) other groups, at various times throughout Earth’s history. Now, sure, we could all pretend that just because we haven’t seen any lately doesn’t really mean they’ve gone extinct. Which would imply that we cannot really know that extinction even happens. And down that slope, madness lies.
However, the case of extinction is different from the case of God’s existence, or lack thereof. I can create the hypothesis: Dinosaurs are extinct. In order to falsify this statement one need only find a dinosaur. We could, in theory, scour the planet and eventually come up with one, should they be out there hiding somewhere. Not finding a dinosaur is necessary, but not sufficient, to validate the hypothesis. Making the case for extinction would involve indeirect evidence such as pinpointing the extinction event, demonstrating that there were dinosaurs before that event, and none have been found since that event, etc. It’s more complex than that, of course, but that’s the essence of what I’m getting at.
I can similarly create the hypothesis: Dinosaurs are not extinct. Finding a dinosaur, of course, would validate the hypothesis while not finding a dinosaur is a necessary, but not sufficient, condition for falsifying it. Making the case that an extinction event didn’t happen would likely be a good deal more difficult.
I could then make the hypothesis: God does not exist. So, easy to falsify, right? Find God, and we’re golden. Except, we don’t know where to even look for God. What if He’s somehow “outside” of the universe, as many of His believers would have us believe? Is that even possible? In this case, as with dinosaurs, not finding God is a necessary, but not sufficient, condition for validating the hypothesis. But without knowing where or how to look, how can we falsify the hypothesis? How do we know when we’ve looked in all the right places and come up empty-handed?
How about the hypothesis: God exists? Since we still don’t know where to look for God, we’ll have a difficult time validating the hypothesis. Not finding God, again, is a necessary, but not sufficient, condition for falsifying the hypothesis. If God is omnipotent and omniscient, then He could screen himself from attempted observation, thereby ensuring that even if He exists (in this hypothetical), we would still not find Him via direct observation.
Thus, we have the situation where because of God’s attributed omnipotence, He can basically do anything He pleases – including remain undetected despite our best efforts. We have no means of distinguishing between “does not exist” and “exists but cannot be observed”. Were He not attributed with omnipotence, the factuality or not of His existence would likely have been resolved long ago.
Anyway, the point of all this rambling is that by “absence of evidence is not evidence of absence” I mean that absence of evidence is a necessary, but not sufficient, condition to establish evidence of absence. If that makes any sense; I’m not sure it does at this point, since I’m way too tired to be having philosophical discussions… I am atheistic in the sense that I do not believe God exists. I am agnostic in the sense that I do not believe it can be knowable with any degree of certainty whether that belief is correct or not.