He didn't make a case for no creator existing. He repeated a well-known argument for why a god isn't known to be necessary to explain existence: If a god can exist uncaused, undesigned and uncreated, then so can that which is said to be the creation of such a god. Thus, "There may be no creator" is a valid conclusion of that argument, but "There is no creator" is not.
I just critiqued an argument made by a man accused of being a pedophile, which was sufficient grounds for one poster to reject his argument. This fact seems to be dominating this thread so far:
Sunstone, whose clear thinking I admire, responded:
With all due respect, I would like to argue that a derogatory statement about the source of an argument is not any kind of fallacy unless one is using that claim to argue that the source is wrong, that is, to come to an opposite conclusion based on a perceived character defect, a type of genetic fallacy. Genetic fallacies are claims that an argument is wrong because the source is inadequate in some sense. It need not (but can) be an ad hominem fallacy. One can make the same mistake simply by rejecting the source because it is unfamiliar or not adequately vetted, an example of a genetic fallacy that is not also an ad hominem fallacy.
There is an important distinction between saying that one will not accept an argument because of the reputation of its source, and saying that the argument is wrong for that reason. For example, I am simply not interested in anything coming from a creationist apologetics source because I am familiar with their agenda, values, and methods, none of which I trust or support, and which have too often been found to be taking liberties with the truth.
Why is this a legitimate reason to reject all such sources? Because to evaluate an argument from an untrusted source, one must not only fact check all factual claims to see which ones if any have been fabricated or distorted, one must also survey a much larger assortment of trusted resources to get an overview of the topic to see what has been omitted. Why bother?
I recently saw an argument in a creationist apologetics site that man could not have evolved from the quadripedal great apes because they all have 24 pairs of chromosomes, and man has only 23. Anybody interested can read this argument at
DNA tests prove Darwin Was Wrong - Ape DNA very different from human DNA - Laws of Genetics Contradicts Ape to Human Evolution in the section called "One atheist lie after another." The author argued that the dropout of an entire chromosome would have been a lethal mutation, which of course would be true of that were what had actually occurred.
I happened to already know what was missing from that deceptive and dishonest argument: a fusion event that occurred after the line that became man diverged from the one that became chimps and bonobos. What had been two chromosomes became one bigger one.
But had I not known that, how could I evaluate that argument? Looking only at what is included, one would have to agree with it.
After enough experience with these kinds of sources, I have now simply dismissed them all. But notice carefully that I am not making the argument that their conclusions are wrong because of their reputations, but merely that I am not interested in what they have to say because I don't trust that they are being honest, and it's not worth the effort to research the argument in order to adequately evaluate it.
My point is that such an attitude, which has been called an example of the genetic fallacy, is not a fallacy because it is not part of an argument against whatever the creationist is claiming, and logical fallacies are elements of invalid arguments. And for that reason, I have to disagree that Lyndon committed an ad hominem fallacy. He wasn't making a counterargument like I did in my first paragraph above. He was merely telling you that he wasn't interested in the opinions of a reputed pedophile.
What do you think?