Scummier was the attack on his credibility:

That's not what Fenster did. He went on the attack.

"You never completed a master's degree, correct?" he asked Diffie.

"That's correct," said Diffie.

"Other than the honorary degree, you don't have an earned doctorate or Ph.D. correct?"

"That is correct," said Diffie.

And even though he taught a few courses, "you never had a real professorship, correct?" asked Fenster.

"I never had a full-time academic job, no."