




Rovelli uses GPS time dilation and entropy to explain why our intuitive sense of a universal, linear time is actually a useful fiction shaped by our limited perspective as observers, which dismantles the idea of a fixed global now and shows how gravity and speed warp time in tangible ways that affect everything from aging to memory, making the universe feel like a dynamic network of events rather than objects moving through a static backdrop, which is a profound shift from thinking time as a uniform force.

