Less obvious was the scientists' corollary debunking of a couple of powerful 60s memes: that of the driven New Yorker--the adman, the scriptwriter, the creative, hurry-up, let's-run-it-up-the-flagpole-and-see-whose-pants-fall-down type; and of his near-opposite, the corporate apparatchik, for both of whom smoking and drinking and stress inevitably led to that most with-it of the wages of sin, the peptic ulcer.
But it was just a bug, eminently treatable with antibiotics, after all.
The really amazing (and beautiful) aspect of the story is the wealth of insights that have stemmed directly from the discovery of H. pylori. A few NYT articles give an idea:
Update: Damn, I always forget the trivia: What movie is the purported likeness of Barry Marshall taken from?