It's odd to me that they would try to prove Jesus' life and existence through historical proof. He is a miracle. His life isn't going to be as easy to track historically as say, George Washington. I guess it just comes down to faith. Either you have it or you don't. If you don't, well those of us who do are praying for you.
But the best part of all: I find it funny that they are say for Jesus to have been born to Mary, a virgin, she would had to have had an X and a Y chromosome. OK, so they accept that she had a child w/o having sex, but can't accept that she could have a boy unless she had an X and a Y chromosome?? How can you accept one miracle and not the other??