  An alternative approach towards quantum theory is described, and tentative
attempts to connect his approach to special and general relativity are
discussed. Important concepts are gauge groups and information/entropy
connected to some physical systems. Some recent results on information in
connection to black holes are touched upon, and it is indicated how expected
information can be argued to be conserved. This argument only depends on what
happens outside the black hole. Everything connected to the interior of the
black hole is inaccessible.
