In addition, in this version some of the argument's assumptions, previously construed as merely decision-theoretic, follow from physical properties expressed by constructor-theoretic principles.īorn Rule constructor theory probability quantum physics. It describes itself like this: The basic principle of constructor theory is that all fundamental laws of nature are expressible entirely in terms of statements of which tasks (i.e. This broadens the domain of applicability of that argument to cover constructor-theory compliant theories. I was just introduced to 'Constructor Theory' today., which is an attempt at reformulating the laws of physics only by describing what is possible and what is impossible. And I establish sufficient conditions for a superinformation theory to inform decisions (made under it) as if it were probabilistic, via a Deutsch-Wallace-type argument-thus defining a class of decision-supporting superinformation theories. The replication of a set of attributes is the task. Both replication and self-reproduction are expressed exactly in constructor theory. Then I explain how the appearance of stochasticity in (finitely many) repeated measurements can arise under superinformation theories. The term ‘constructor’ is a placeholder for the (infinite) sequence of approximations to the ideal behaviour of a constructor. I prove that the unpredictability of measurement outcomes (to which constructor theory gives an exact meaning) necessarily arises in superinformation theories. Generalizing and improving upon the so-called 'decision-theoretic approach', I shall recast that problem in the recently proposed constructor theory of information-where quantum theory is represented as one of a class of superinformation theories, which are local, non-probabilistic theories conforming to certain constructor-theoretic conditions. Hence the notorious problem of reconciling it with the unpredictability and appearance of stochasticity in quantum measurements. Instead of describing the world in terms of trajectories, initial conditions and dynamical laws, in constructor theory laws are about which physical transformations are possible and which are impossible, and why. First, let me clarify that whether you’re using constructor theory or using the current approach, we are just dealing with some guess as to what the actual laws are. Constructor Theory is a new approach to formulating fundamental laws in physics. The substrate-independence theory concentrates on the flow of information as the underlying property of the host system. Scaffolds are cognitive abstractions of constraints that relate to information within a system. I’m still struggling to understand how constructor theory provides the why. The substrate-independence theory utilizes sensemaking techniques to provide cognitively based scaffolds that guide and structure learning. The music in this podcast comes from eusa and the track. You can also read our articles based on the interview with Marletto. In this podcast we talk to one of them, Chiara Marletto, to find out more. Unitary quantum theory, having no Born Rule, is non-probabilistic. David Deutsch defined constructor theory as the theory of which transformations can or cannot be caused and why. This is why physicists from the University of Oxford have developed a new framework for looking at the physical world, called constructor theory.