How did the myth of Jesus' resurrection originate?

[Clueless Morgan]

To those Christians who find it incredulous that anyone would have believed Jesus had risen from the dead if such an event hadn't take place, I have just one word:

"Elvis"

How long was he in the grave before urban legends were told about him faking his own death? How many testified to "Elvish sightings"? And he wasn't a religious icon promising the resurrection of the dead. He lived in the modern age and not the superstitious time of 1st century Judea.

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Why is it then so impossible to believe that ignorant and superstitious people wouldn't start believing fanciful tales about Jesus rising from the grave?

My favorite part of the whole Elvis-Lives! myth is pointed out by Penn Jillette: Elvis's fried chicken recipe.
http://www.youtube.com/watch?v=w_f177k0ytA