So you have evidence that the existence of extra terrestrial intelligent life is probable?
No, and I never claimed I did. Why do you ask?
Are you saying that extra terrestrial intelligent life is known to exist with 100% certainty? Or are you saying that the values assigned to the terms are known with 100% certainty? Either way you'd be mistaken.
No, and I never claimed I did. Why do you ask that? I don't think you're reading my posts again.
Drake's equation isn't an argument, but any argument based on Drake's equation that concludes that the existence of aliens is probable would indeed posit the existence of aliens.
Yes, I agree. The Drake Equation is not evidence one way or the other for the existence of ET intelligence. (I have gone over all this before.) Even Drake would agree that one's conclusion about the likelihood of ET intelligences should be based on the evidence. As Sagan noted (in the quote I provided), we simply don't have that evidence. Anyone who asserts a probability for the existence of ET intelligence is just pulling a number out of the air. It's meaningless, and it assume knowledge we simply don't possess.
If the argument were assuming the existence of a fine-tuner and then concluding that a fine-tuner exists, it would be circular. But that's your own straw man, not the argument cj posted.
WHAT? When I asked how you get premise number two without assuming the conclusion (the existence of God), you answered that this was based on the finer-tuner argument. I most certainly did NOT raise the subject of finer-tuner.
Nobody has indicated that anyone used it that way. What I said is that people use arguments based on Drake's equation to support a belief that extra terrestrial intelligent life exists.
IF they do, they're misusing Drake's Equation. As I said, even Drake would agree that the question can only be answered by the evidence, and to date, we have no evidence of ET intelligent life.
Now, I would use the Drake Equation (or something like it) to point out that we also don't have the information we'd need to make the assertion that Makaya is making in
that other thread (to whit: that we are unique in the universe or, in other words, the assertion that no ET intelligence exists in the universe). There the equation is helpful in pointing out the information we would need to make that assertion.