Cosmologist João Magueijo from Imperial College London proposes a radical reframing of how the laws of physics originated, challenging the assumption that physical constants like the speed of light have always been fixed.
Magueijo built his career on questioning foundational assumptions. In the 1990s, he developed the theory of variable speed of light cosmology, which proposed that light traveled faster in the early universe than it does today. While mainstream physics has not adopted this framework wholesale, it opened doors to alternative thinking about constants physicists treat as immutable.
His new proposal addresses a deeper puzzle. The laws of physics appear timeless and universal, yet their origins remain unexplained. Why does gravity follow an inverse-square law? Why do electrons carry the charge they do? These rules feel like eternal truths, but Magueijo argues they may have emerged through some process.
The framework he offers draws from quantum mechanics and cosmology. Rather than treating physical constants as unchangeable givens, Magueijo suggests they could have evolved or been selected through mechanisms operating in the early universe or even across multiple universes. The idea parallels how biological systems evolve through natural selection, though applied to physical laws themselves.
This work appears speculative by conventional standards. Magueijo acknowledges the difficulty of testing such ideas empirically. Observable universe constraints limit what can be verified directly. However, the proposal invites physicists to reconsider whether laws of nature represent the only possible configuration or one outcome among many.
The question matters philosophically and scientifically. If laws emerged rather than existing eternally, it transforms how physicists understand reality's foundations. It also connects to longstanding questions about fine-tuning, the multiverse, and why constants take the precise values that permit life to exist.
Magueijo's work reflects a growing minority view in cosmology that challenges traditional frameworks. Whether his specific proposal