The real fun is going to begin when we apply constructive theory to physical theories that are incompatible with quantum theory. And I think that is when constructive theory will come into its own. My guess is that it will not be practically possible to make progress without an overarching framework like constructive theory. Now, as I said, constructive theory could be wrong, but in that case, trying to develop it will show us what is needed instead.
This is my interview with David Deutsch, Visiting Professor of physics at the Centre for Quantum Computation, the Clarendon Laboratory, Oxford University and an Honorary Fellow of Wolfson College, Oxford. We discuss the constructor theory of information, some of its conjectured principles, the unification of classical and quantum information, and more.
Constructor Theory of Information paper - https://arxiv.org/ftp/arxiv/papers/1405/1405.5563.pdf
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