  The interpretation of quantum mechanics has been discussed since this theme
first was brought up by Einstein and Bohr. This article describes a proposal
for a new foundation of quantum theory, partly drawing upon ideas from
statistical inference theory. The approach can be said to have an intuitive
basis: The quantum states of a physical system are under certain conditions in
one-to-one correspondence with the following: 1. Focus on a concrete question
to nature and then 2. Give a definite answer to this question. This foundation
implies an epistemic interpretation, depending upon the observer, but the
objective world is restored when all observers agree on their observations on
some variables. The article contains a survey of parts of the authors books on
epistemic processes, which give more details about the theory. At the same
time, the article extends some of the discussion in the books, and at places
makes it more precise.
