Tim pretends to be a mobile app developer, game designer, and PhD student, and now he’s even pretending to be an author. (He cowrote the latest versions of Learning Cocoa with Objective-C, Swift Developement with Cocoa, Learning Swift, and the Kerbal Space Program Players Guide for O’Reilly.) When he isn’t busy avoiding being found out as a fraud, Tim spends most of his time designing and creating little apps and games he won’t let anyone see. He also spent a disproportionately long time writing this tiny little bio, most of which was taken up trying to stick a witty sci-fi reference in... before he simply gave up.