| Sumario: | Spacetime functionalism in QG In their contribution, Vincent Lam and Christian Wüthrich follow up on their earlier work having first applied spacetime functionalism to quantum gravity. In light of these recent developments, this special issue on spacetime functionalism in GR and quantum gravity offers a timely collection of newly written articles advancing our growing appreciation of the promises - and the limitations - of spacetime functionalism. In quantum mechanics and in GR, spacetime functionalism has opened new interpretative avenues, and in quantum gravity it is possibly essential for understanding how spacetime emerges from a fundamentally non-spatiotemporal structure. In the foundations of quantum mechanics, general relativity (GR), and quantum gravity, spacetime functionalism has emerged as a promising approach to the vexed issue of the nature of spacetime.
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