Joshua Castle is a PhD candidate at the Australian National University's School of Cybernetics, where his research develops a system for governing societies in the age of exponential AI — asking what structural conditions keep human freedom and imagination genuinely open alongside the technologies we build. His work sits at the intersection of political philosophy, cognitive science, ecology, and cybernetics systems theory. An XPRIZE Award-winning innovator, Joshua has worked across multiple startups on challenges from knowledge management to carbon removal, as well as research used for Australian policy.