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[Rosario Gennaro is a cryptographer, and he has been at IBM for more than 15 years. (He must have started as a teen-ager.) On Monday, he will start his new job as a professor at the City College of New York and the Director of the Center for Algorithms and Interactive Scientific Software. In the middle of his move and of an internet-free vacation, Rosario found the time to write a guest post that goes in a quite different direction from the others. -- L.T.]

“David Hilbert … I suppose his name doesn’t mean much, if anything, to you? No, no? Well, there you are, you see? It’s the way of the world! People, never seem to hear about the really great mathematicians!”

The recent celebrations for Alan Turing’s centenary made me revisit the BBC movie of “Breaking the Code” that amazing Broadway play, with a wonderful Derek Jacobi playing Alan Turing. You can see the most astonishing bit of this play here:

a 6-minute tour de force monologue explaining in lay terms Godel's Theorem and Turing's discovery of undecidable problems.

The quote above is from the beginning of this monologue, and it made me reconsider the goal of this guest post that I had promised Luca for his blog. Yes, I could talk about my coming out and about how supportive the Theory community has been. Or I could support, by personal experience, Luca's comments on how graduate students who are gay and not out, have an additional burden to carry. Imagine your doubts on being good enough to do research, as you embark in a Ph.D. program (well, I don't know if *you* had those doubts, but I surely had them!) and add to them the sense on not being "good enough" in general because you are gay.

But that's not what I decided to talk about. There is no question that Alan Turing's sexual orientation has played a huge role in the popularization of his figure and his work. "Breaking the Code" would not have been written if not for the unique personal story that accompanied Turing's exceptional contribution to Mathematics and Computer Science. Nor would NPR have run a story last month on the centenary. Neither Godel nor Hilbert (both mentioned in the above monologue) got such treatment.

While I wish that being gay were a sufficient condition for being a celebrated mathematician in the news (reserve space for my profile in the next issue of the New Yorker please), I wonder if being queer in some form is necessary. What can we do, as a community to make sure people know, not only Turing, but also Hilbert, and Godel, and Gauss. How can we make the Mathematics relevant, rather than the person. Can we get liberal arts majors, for example, to have a deep appreciations of the *ideas* and the *concepts* of Mathematics and Computer Science, even if they will never understand the proofs and the techniques? As I embark on an academic career after 16 years of research in a corporate lab, these questions have been occupying my mind. Others are wondering too …

Theoretical Computer Science, in my opinion, presents many opportunities on this front. Decidability, computational hardness, (pseudo)randomness … those are all concepts around which a philosophy class could be built. After all, as the fictional Turing says in the play, it's about telling right from wrong. I would love to develop such a class for liberal arts majors, and maybe the readers of "in theory" can help me by pointing me to similar classes that are already being taught somewhere. Yes, I am that lazy.

To finish off, being an opera queen (as any self-respecting homosexual should be) I have a not-so-secret wish to see "Breaking the Code" adapted into an opera. I think John Adams, whose work on physicist J. Robert Oppenheimer and the atomic bomb was mesmerizing, would be my top choice for a composer:

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