I recently read this fabulous book by Carlo Rovelli.
Buy it here.
The book works on many levels. It is an attempt to explain the emerging theory of quantum gravity. This has numerous mind-blowing conceptual elements – such as the idea that spacetime is quantized, that time isn’t really a fundamental thing that ticks forward – it’s just our perception – a resultant effect of innumerable quantum-level events and the average direction of heat flow; and that everything in the universe is made up of ‘covariant quantum fields’: there are no particles, waves, or forces as such.
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