Marcin Gerwin, PhD is a specialist in deliberative democracy and sustainability. He is a coordinator of the Center for Blue Democracy. A political science graduate, the topic of his doctoral dissertation focused on sustainable development in the context of global challenges. He designs democratic processes and runs citizens’ assemblies. A co-founder of Sopocka Inicjatywa Rozwojowa which led to organising the first participatory budgeting process on the city level in Poland. He is an author of “Citizens’ Assemblies: Guide to democracy that works”, „Deliberative Democracy: Waldenia Model”, „Citizens’ Chamber: A Blueprint for a New Democracy”, “A Constitution Created by the Citizens”, as well as a co-author of “Rivendell Model”.