Analyze what counts as scientific explanation (especially in multiverse contexts)
Develop a substantive, general account of scientific explanation adequate to multiverse reasoning—one that distinguishes explanatory strategies based on genericity/typicality from those invoking selection effects, and that guides confirmation in cosmology and other sciences.
References
I especially emphasized three problems, prompted by the three multiverses in succession: What is a possibility? What is objective probability? And what is an explanation? These are difficult open problems in philosophy.
                — The Multiverse: a Philosophical Introduction
                
                (2505.23639 - Butterfield, 29 May 2025) in Chapter 6, opening paragraphs