Chronological feed of everything captured from David Deutsch.
Constructor theory redefines physical laws by specifying possible transformations without referencing time, addressing the temporal anomalies in traditional physics. This framework nonetheless accommodates concepts of duration and dynamics, allowing for compatibility with established physical laws. The work demonstrates how to express these concepts within a constructor-theoretic paradigm.
This paper successfully re-expresses Everett's relative-state construction within the Heisenberg picture, addressing previous conceptual and technical challenges. This new formulation explicitly demonstrates the local and approximative characteristics of Everettian multiplicity, attributing them to specific entanglement types and localized inaccessible information. The work refines the definition of an Everettian "universe" as fully quantum and distinct from quasi-classical interpretations.
This paper argues that common objections to the testability of Everettian Quantum Theory (EQT) stem from misunderstandings of probability and scientific testing methodology. By correcting these misconceptions, the author posits that EQT is indeed testable and, furthermore, that stochastic processes and Bayesian credences can be eliminated from fundamental physics and testing methodology, respectively. This reframing simplifies the theoretical and methodological landscape for EQT.
This paper proposes a 'Constructor Theory of Information' that defines information solely through the lens of physically possible and impossible transformations. By treating information as a physical entity rather than a mathematical abstraction, it seeks to resolve foundational circularities in information theory and unify classical and quantum informational properties under a single physical framework.
Constructor theory offers a novel foundational approach to physics, diverging from traditional predictive models by framing fundamental laws in terms of possible and impossible transformations. This framework aims to unify various scientific domains, including information theory and computation, by reinterpreting physical laws as statements about what can and cannot be caused to happen. The theory also seeks to integrate concepts like testability, computability, and emergent laws within a purely physical description.