We met and became friends, a relationship that lasted for two decades. Of Argentinean heritage, Lewis was thin and geeky, with short-cropped black hair, slicked down and brushed straight back, and sporting a mustache that he probably thought made him look older. On hacking projects, Lewis was the guy I would come to trust most in the world, though he came with a personality filled with contradictions. Very polite, but always trying to have the upper hand. Nerdy, with his out-of-fashion clothing choice of turtlenecks and wide-bottomed trousers, yet with all the social graces. Low-key yet arrogant.