It sounds like you have had a positive experience in the Middle East, DrW. My own travels there were a little disconcerting at times because their attitude towards the female gender is so very different, but every second was fascinating to me. On the flight from London to Cairo, I noticed that nearly every Egyptian woman on the plane began a transformation just before landing. They were all sure to cover their arms and heads as we disembarked, and it left me wondering if I should have thought to do the same, despite what it said in my Lonely Planet. In Jordan, I made sure to conform, but even then, I felt out of place. Clothes that are considered conservative at home made me feel like I was dressing too provocatively, and I never adjusted to the heat.
I suspect there is a vast difference between a Muslim of means who has regular international dealings and those who are disadvantaged and less exposed to the West. I think the differences in culture are felt a great deal more by women, as well, considering the limitations faced in everyday life.
Certainly, I never felt any of the same vitriol that I have experienced on the Internet, but neither did I dare to enter a discussion about anything controversial. Mostly, I just let them ask questions, and was surprised at how many girls were interested about sex in our culture. They all wanted to know if I had a boyfriend. I never once brought up religion, and no one every brought it up to me unless it was to explain what I was seeing.
It's difficult to guess what might count with you as "direct evidence."
We are dependent upon later accounts for both Jesus and Muhammad, as well as for Julius Caesar and most other ancient figures.
With regard to Jesus, I find quite convincing Richard Bauckham's recent book on the gospels as eyewitness testimony.
Well, I don't mean to debate the evidence of Julius Caesar or Jesus in a thread about the Quran, but it seems to me that the evidence for Jesus is far more lacking than the evidence for Julius Caesar.
We know what he looked like, down to his receding hair line. We have more than a few words from Caesar, himself, as well as words from both his friends and his enemies, totaling thousands of separate documents from many separate sources. He established a government and a calender that persisted for some centuries. He appears on coins minted during his lifetime.
Jesus, on the other hand, has none of that, and, having been part of the LDS apologetic community for much longer than myself, I am sure you can appreciate why I find the Gospels included in the New Testament (of the hundreds available) to be less than persuasive. The accepted dates for the origin of the Gospels do not lend to the idea that they were written during the lifetime of Jesus.
As a matter of fact, the earliest Christian authors do not quote Jesus at all. They mention virtually nothing of his life's work.
Noting those main differences, I had always assumed that Mohammed fell somewhere in between, in terms of evidence, since he came so much later. You seem to suggest otherwise. Which accounts of Mohammed do you find most useful?