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Explore fundamental challenges to current gravitational theories in this conference talk delivered at the Physical and Mathematical Ontology conference in Munich. Examine critical problems with the Lambda CDM model, dark matter theories, and recent cosmic microwave background anomalies that suggest our understanding of gravity may be fundamentally flawed. Delve into philosophical perspectives contrasting Heisenberg and Dirac's approaches to physics, while applying Occam's Razor to evaluate the explanatory power of competing theories. Investigate the significance of fundamental constants as a pathway to deeper physical understanding and learn about the principles underlying scientific revolutions. Analyze the relationship between gravity and inertia through Dennis Sciama's work, explore Mach's principle via Newton's bucket experiment and Foucault's pendulum, and discover why Newton's gravitational constant G requires theoretical explanation. Consider Einstein's original variable speed of light (VSL) concept and how Robert Dicke's corrections led to radical new explanations for cosmological redshift. Connect these ideas to Dirac's large number hypothesis and examine alternative cosmological models including "Big Flash" cosmology that challenges material expansion interpretations of redshift. Evaluate the problems and potential of VSL cosmology while synthesizing these revolutionary concepts that could reshape our understanding of gravity, inertia, and the cosmos.
