Actually, in effect it does, because in practice scientists take the word of other scientists that it has been demonstrated in place of seeing that demonstration for themselves. The peer review system illustrates this perfectly. The peer reviewer has not witnessed the demonstration at all, he or she merely has to decide whether the demonstration has been constructed well and in line with current knowledge, and therefore can have yielded the results reported. And the authority of the peer reviewer is the guarantee that the reported results really were demonstrated.
No, sorry, you've fundamentally misunderstood the argument from authority, and seemingly the peer review process to. Scientific consensus is not an argument from authority, it's not based on an individual's credibility. The scientific evidence itself is presented in a paper which, yes, is peer reviewed, but not just by one person. And the peer review is only the gateway through which the paper needs to go to get published. Once published, anyone is free to read, challenge, recreate, debunk, etc. the study. You are not relying on one person's authority on a matter, you are demonstrating the evidence of the research. The argument from authority is simply where one is using the word of a person of authority on a matter as evidence for a claim. That is not anything like the scientific review process.
The idea that all scientific knowledge results from replicable experiment is a myth. Much does not at all.
I don't think I ever suggested that was the case anyway.
The weight of evidence, as assessed by historians who know how to interpret the sources, is that Jesus existed.
All I've stated is that there is still some debate. It hasn't been proven. But like I said, I don't much care whether he did or not, there's still a long way to go to demonstrate divinity of any kind.
For Christians, that Jesus is the Son of God is the only explanation that makes sense of the facts of his life, death and resurrection.
His life: still up for debate. His death: dependent very much on his life. His resurrection: Absolutely no evidence that this happened whatsoever aside from a story in a book. The only explanation that makes sense: A common sense fallacy. And honestly, how is that the best explanation, let alone the only one. An argument from ignorance to boot.
It's the simplest possible explanation, the one that requires least in the way of post-hoc reasoning and suppositious accounts of un-recorded actions and dispositions.
So the simplest possible explanation is that a man came back from the dead? Are you kidding? There has not been one single, credible, demonstrated example in the entirety of human history of someone coming back from the dead, yet you think this is the best and simplest explanation? Wow! That's amazing, it really is!
Of course, no atheist need believe in God. But their non-belief does not make Christian belief in Jesus Christ unreasonable or ill-founded.
No it doesn't. The Christian belief does that all by itself. It is, by definition, illogical and unreasonable to believe in the resurrection because there is insufficient evidence to back up the belief. That's why it's called faith; belief without sufficient evidence.