Why I Don't Buy the Simulation Hypothesis (Nor Materialism)

Kurt Jaimungal critically examines and ultimately rejects both the simulation hypothesis and physicalism, presenting counter-arguments and highlighting their inherent logical and conceptual flaws.

• The simulation hypothesis's core arguments, including glitches and quantum mechanics analogies, are flawed and based on misinterpretations.

• Bostrom's statistical argument for simulation relies on a dubious 'principle of indifference' and an incorrect assumption about humanity's 'typical' status.

• Physicalism faces challenges regarding the progressive nature of scientific theories, the uniqueness of physical descriptions, and the circularity or incompleteness of its definition of 'physical.'

Kurt Jaimungal systematically deconstructs the arguments supporting the simulation hypothesis and physicalism, concluding that neither theory provides a robust and coherent explanation of reality. He identifies significant logical inconsistencies, definitional ambiguities, and unproven assumptions within both frameworks, asserting that the evidence presented for them is often misinterpreted or relies on dubious philosophical principles. Ultimately, he remains unconvinced that either fully accounts for the nature of existence.

Critique of Simulation Hypothesis

• 00:14:14 Jaimungal refutes common arguments for the simulation hypothesis, such as the idea that 'glitches' or quantum weirdness in reality provide evidence. He argues that attributing observed oddities to a simulation is a faulty Bayesian inference, akin to concluding immortality from being alive. Furthermore, if increasing graphical fidelity is a premise, glitches should decrease, not manifest as inconsistent memories, and rendering in games creates consistent histories, contradicting 'Mandela effects.' The hypothesis also struggles with the type of computer running the simulation, as current physics implies quantum, not classical, computation, and there is no final theory of reality to base such a computer on, rendering the concept a tautology.

• 00:23:33 Bostrom's statistical argument, which suggests a near 100% probability of being in a simulation if future civilizations create conscious 'sim babies,' is challenged. This argument hinges on the 'principle of indifference,' which Jaimungal demonstrates as dubious through examples like dice rolls and cube measurements, where partitioning options leads to inconsistent probabilities. Additionally, because humanity has not yet created conscious simulations, we are not a 'typical member' of the population of simulated and base realities, thus undermining the principle of indifference. The cascading failure model, where a crash in one simulation layer affects all subsequent layers, further reduces the probability of being in a simulation to a low percentage, even under Bostrom's own assumptions.

• 00:29:05 Physicalism, or materialism, is defined as the belief that everything supervenes on the physical, meaning all facts, including mental phenomena, are fixed by physical facts. Proponents argue that scientific theories are improving and converging on a unique description of reality, and that 'physical' is clearly defined. However, Jaimungal challenges the transitivity of scientific progress, showing that a better theory C than B, and B than A, does not necessarily mean C is better than A, using non-transitive relationships like Efron's dice or rock, paper, scissors. The concept of scientific convergence also lacks a clear topological definition and would require knowing the 'true theory' beforehand.

• 00:34:17 The claim that physics offers a unique description of reality is disputed, given the existence of dualities and even trialities in physics, where different theories describe the same underlying phenomena. Furthermore, the 'formula to is gap' suggests that one cannot infer reality solely from a mathematical formula, as multiple metaphysical interpretations can be compatible with a given set of equations. The definition of 'physical' itself is critiqued for being circular (physics is the study of the physical) and often defined negatively (what is not mental), inheriting the 'ill-definedness' that physicalists attribute to concepts like consciousness. If physicalism relies on a future, complete physics, that future physics could conceivably include irreducible mental properties, which contradicts the core premise of physicalism.