This book presents two lost histories. One relates to the biography of the Vienna Circle-philosopher Otto Neurath (1882-1945) whose life-story reflects the tumultuous early twentieth century, the other to the history of museums, exhibitions, and of audience advocacy. A polymath, Neurath united theory and practice in many fields: from history and philosophy of science to adult education. Until now the practical application of Neurath s philosophical convictions, his innovations in museology, have not been presented coherently. Neurath s museum and exhibition work in the Red Vienna (1925-1934)...