Rummaging through the archives, I realized that a highly relevant article by
apparently has not yet been discussed on this list, although many have
A Complete Theory of Everything (Will Be Subjective)
Algorithms 2010, 3(4), 329-350; doi:10.3390/a3040329
Part of the Special Issue
"Algorithmic Complexity in Physics & Embedded Artificial Intelligences"
In Memoriam Ray Solomonoff (1926-2009)
Abstract: Increasingly encompassing models have been suggested for our world.
range from generally accepted to increasingly speculative to apparently bogus.
progression of theories from ego- to geo- to helio-centric models to universe
theories and beyond was accompanied by a dramatic increase in the sizes of the
worlds, with humans being expelled from their center to ever more remote and
locations. Rather than leading to a true theory of everything, this trend faces
a turning point
after which the predictive power of such theories decreases (actually to zero).
the location and other capacities of the observer into such theories avoids
and allows to distinguish meaningful from predictively meaningless theories.
leads to a truly complete theory of everything consisting of a (conventional
theory of everything plus a (novel subjective) observer process. The observer
is neither based on the controversial anthropic principle, nor has it anything
to do with
the quantum-mechanical observation process. The suggested principle is extended
practical (partial, approximate, probabilistic, parametric) world models
(rather than theories
of everything). Finally, I provide a justification of Ockham’s razor, and
criticize the anthropic
principle, the doomsday argument, the no free lunch theorem, and the
Keywords: world models; observer localization; predictive power; Ockham’s razor;
universal theories; inductive reasoning; simplicity and complexity; universal
Remarkably, Prof. Hutter holds doctoral degrees in both physics and computer
where he made fundamental contributions.
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