If you had run into him a dozen years ago, it might have been in a bus station somewhere between Halifax, Nova Scotia and Miami Beach, on the road with his father, a silversmith and glassblower whose only degree was from Medford High School.

And yet, there he was on Friday, lecturing a roomful of scientists on his obscure specialty: computational origami. Demaine, at 20, arrived in the fall at the Massachusetts Institute of Technology with the rank of assistant professor - one of the youngest the university has ever hired.

From a hippie lifestyle to being one of the youngest professors in MIT