Did the resurrection accounts develop in a suspicious way?

In the debate I discussed in my last post, Alex O'Connor raised a common objection to the resurrection accounts in the gospels. Supposedly, the earliest gospel, Mark, has the simplest material on Jesus' resurrection, and each gospel after that gets increasingly advanced in the claims it makes on the subject. See Alex's comments here. He especially discusses an increase in the number of resurrection appearances in each gospel - in the order of Mark, Matthew, Luke, John - though he doesn't limit his development argument to that issue.

There are a lot of problems with that sort of objection. As Jonathan McLatchie mentioned in the debate, the material on the resurrection in 1 Corinthians 15 predates all of the gospels, yet is more advanced in some ways. I want to add some other points.

Did Paul experience a guilt hallucination on the road to Damascus?

Jonathan McLatchie and Alex O'Connor (CosmicSkeptic) recently debated the topic "Theism or Naturalism, which provides a better account of reality?". I want to comment on a couple of issues related to Jesus' resurrection that came up in the debate. I'll address one of those issues here and the other in a later post.