Introduction (Alexander Christian, David Hommen, Nina Retzlaff and Gerhard Schurz).- Part I: Philosophy of physics.- Chapter 1: Quantum Gravity: An Ideology of Unification? (Kian Salimkhani).- Chapter 2: On Predictions and Explanations in Multiverse Scenarios (Keizo Matsubara).- Chapter 3: The Role of the Concept of Causation in Physics (Enno Fischer).- Chapter 4: Causality in General Relativity. "Partial Determination" Revisited (Andrea Reichenberger).-...