Ray has asked for evidence that Darwin existed and, as expected, has decided to imitate his strawman view of atheists by declaring every piece of evidence unacceptable because we can't be absolutely certain.
Here's my response:
"Ray's right, we can't be absolutely certain that Darwin existed. We can't be absolutely certain about any historical event.
But absolute certainty is a red herring, the only issue is one of reasonable certainty - that a claim has been verified as 'most probably true', to the best of our ability to do so. Some claims have more supporting evidence than others. Additionally, some claims require more evidence than others before they become 'reasonable'.
The only answer anyone needed to give, and the only answer that is correct is this:
We have sufficient evidence to claim that Darwin most probably existed and that the events attributed to his life (the voyage on the Beagle, his writings, articles about him by contemporaries - favorable and unfavorable, his family line, etc) are most probably accurate.
The same is true for George Washington, though the "I cannot tell a lie" story is most likely false, and there may be other romanticized, mytho-heroic tales attributed to him which aren't very accurate.
The same cannot be said for Paul Bunyan or King Arthur... or Jesus.
When we try to determine whether a particular historical figure existed, we have to collect the stories about them to define the personage we're trying to verify. If the preponderance of evidence confirms a significant portion of those stories, it's very probable that the individual existed.
If the stories are supported by nothing more than anecdotal evidence or hearsay, they're unreliable. If they also include claims of supernatural/magical abilities, they're better relegated to the "tall tales" bin.
Ray has mistakenly tried to represent the case for Jesus as being of a similar nature to the question of Darwin's existence. They're not remotely comparable - and if we find out tomorrow that Darwin never existed, that he was a fictitious invention, it doesn't change a single thing about the science of evolution or the value of the discoveries attributed to him. The same isn't true for Jesus.
Ray is comparing apples and motorcycles and making a childish appeal to absolute certainty where no such appeal is required or justified."
Though that will come as no surprise to anyone.
Merry Christmas (to those celebrating it for any reason). Happy Holidays, or not, to those who celebrate something else, or nothing at all. :)