That's not necessarily true. It depends how low that number is and how high the number of "similar" planets is. There is evidence that the probability of events and circumstances that gave rise to intelligent life on this planet are very low and may have only occurred on this planet.
There is evidence that the probability of events and circumstance that gave rise to life on this planet are very low and may have only occurred on this planet? Really? I'm all ears. I would love to hear this evidence that accounts for what has occurred on all other extrasolar planets.
You cannot claim that we have evidence of life occurring only once so that we cannot conjecture that it is likely for it to occur elsewhere and also claim that we have evidence for how hard it is for life to occur elsewhere based on the same evidence of one occurrence. If we have only the one instance, you cannot possibly know how difficult or easy it might be for life to form elsewhere. Maybe it was hard for life to form on earth. Maybe it is the easiest thing in the world for both life and intelligent life to form on another planet.
True, there is no reason to suspect that the same conditions and events wouldn't result in life somewhere else, but there IS reason to suspect that the same conditions and events haven't occurred anywhere else.
Based on what? No one knows all the conditions that are necessary or that are capable of producing intelligent life. You have fallen into the trap that you are accusing others of doing.
But we are not claiming knowledge. We are claiming probability. Probability based on the huge nubmer of chances. It
is a numbers game.
IF the combination of conditions and events that occurred on this planet aren't particularly rare then it may have occurred elsewhere. If they are rare (as is hypothesized by the Rare Earth Hypothesis), it probably didn't occur elsewhere. We don't know the combination of conditions and events by which life emerged here, and we don't know how rare that combination might have been.
Rare, schmare, that doesn't matter. I'm talking about the probability that it happened somewhere, sometime not how common it is. By what logic can you conclude that it is either not possible or highly unlikely for life to have arisen (even intelligent life) at all somewhere and sometime in the vastness of this cosmos?
No, sorry, but they don't lead to any such likelihood. There are no "numbers" to work from. About all we know is that there are a lot of stars. Other important variables are completely unknown.
Fine, they are unknown. It's wrong to do so (because they are not quite as unknown as you suggest), but I will even grant you that. Then you are wrong to argue against the likelihood of intelligent life appearing elsewhere. For all you know there is so much intelligent life in this universe, the variables being unknown, that they are on their way right now.
You cannot argue both sides of the street like this. Either we have some idea of what variables are important and we know that life is unlikely or we have no freakin' clue and it is just as likely as unlikely. Which is it?
It's an issue over lack of evidence for dualism.
No, it is not a lack of evidence. Evidence for dualism would be evidence for dualism and would show that dualism is not impossible. I am not claiming that it is impossible. I am telling you that it works by magic. If a mechanism were explainable, then we wouldn't be dealing with dualism but with monism.
Again, do you have evidence that such interaction is not explainable other than by "magic?" I'll be honest -- I think you made that up.
So, in other words, you are not even going to try to educate yourself and look where I told you to look?
For the last time, this is a much more fundamental issue; it is not an issue of evidence. I did not create the history of philosophy or the central issue in philosophy of mind.
Can you think of an explanation for consciousness? Just because we don't know the mechanism by which something works doesn't mean that there's no possible explanation other than magic.
Sure. I, like many others, have plenty of explanations for consciousness. We simply do not have good ways to test that they are correct yet.
Just as an example, we know of mirror neurons, and we know much of the circuitry involved in emotional and motivational states. Linking emotion/motivation to any other pathway provides both a means of introducing valuation and that esoteric sense of "experience". Link it to a set of mirror neurons that internally mirror the mirror neurons we already know exist for social interaction/empathy, and a crude sense of consciousness would emerge. There are several other systems that play into human consciousness, including attentional/awareness systems; but attention systems have proved relatively easy to build into robots, so that is not going to be the primary stumbling block.
Is this a full explanation? Well, of course not. But that is not the point. Where do you even begin to talk about a mechanism by which mind causes movement or God touches the world?
These problems are not of the same type. If you do not see how they differ, then again I don't see much reason to continue.
That you can't see how any of them work or don't result in magic doesn't equate to "no possible explanation other than magic."
-Bri
For God's sake, this isn't an issue of what I can see or not see; it is an issue of what is explainable in the first place. My ego is not involved in the least.
If we can arrive at an explanation, then what we have explained follows a set of rules. Rule following is the very heart of what we call materialism (can you define energy? I've not met anyone who can explain what "matter/energy" really is without recourse to a circular definition). Explaining things by the way they follow rules is what we mean by rationality/reasoning.
Again, this is not an issue of something that we do not yet know. Things, mechanisms we do not yet know are material. They have material explanations. I am talking about things that cannot be explained. If they follow the rules of the stuff we call matter/energy, they are of the substance that we call matter/energy. For something to be of another substance it cannot follow the rules of the material world. If it did, then it would be part of the material world or it would be an entirely superfluous addition that could not be discovered in any way (so how could you possibly know it existed -- I already mentioned epiphenomenalism, which is a type of this problem). For us to know that something immaterial exists, it must not work by material means. For it to work by an explainable mechanism means that it is actually material and not immaterial. There is a reason why when we speak of divine action we employ words like "miracle".