The concept of time as an illusion arises from the discrepancy between our subjective experience of "flow" and the mathematical descriptions found in modern physics.

1. The Block Universe (Eternalism) In General Relativity, time is treated as a fourth dimension woven into a single fabric with space. This model, known as the Block Universe or Eternalism, posits that the past, present, and future exist simultaneously as a fixed four-dimensional structure. The Rietdijk-Putnam argument (and the related Andromeda Paradox) uses the relativity of simultaneity to argue that there is no universal "Now"; an event in your future may already be in the "present" of an observer moving at a different velocity, implying that the future is as real and fixed as the past.

2. The Problem of Time in Quantum Gravity When physicists attempt to unify quantum ...