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Most recently he has been collaborating with Christian Wüthrich (University of Geneva) on a project, supported by ACLS, NSF and the John Templeton Foundation, on philosophy and quantum gravity: see beyondspacetime.net for information. They have written articles (for example, “Emergent Spacetime and Empirical (In)coherence” in Studies in History and Philosophy of Modern Physics, 2013), organized conferences, edited a journal special edition, and are completing a book. In 2015-8, they are running a JTF funded project, involving postdocs, students, workshops, publications, and speakers, Space and Time After Quantum Gravity.