In a forest a fox bumps into a little rabbit, and says, "Hi,
junior, what are you up to?"
	"I'm writing a dissertation on how rabbits eat foxes," said the
rabbit.
	"Come now, friend rabbit, you know that's impossible!"
	"Well, follow me and I'll show you."  They both go into the
rabbit's dwelling and after a while the rabbit emerges with a satisfied
expression on his face.
	Comes along a wolf.  "Hello, what are we doing these days?"
	"I'm writing the second chapter of my thesis, on how rabbits
devour wolves."
	"Are you crazy?  Where is your academic honesty?"
	"Come with me and I'll show you."  As before, the rabbit comes
out with a satisfied look on his face and a diploma in his paw.
Finally, the camera pans into the rabbit's cave and, as everybody
should have guessed by now, we see a mean-looking, huge lion sitting
next to some bloody and furry remnants of the wolf and the fox.

The moral: It's not the contents of your thesis that are important --
it's your PhD advisor that really counts.