  We give a condensed and accessible summary of a recent derivation of quantum
theory from information-theoretic principles, and use it to study the
consequences of this and other reconstructions for our conceptual understanding
of the quantum world. Since these principles are to a large extent expressed in
computational terminology, we argue that the hypothesis of "physics as
computation", if suitably interpreted, attains surprising explanatory power.
Similarly as Jeffrey Bub and others, we conclude that quantum theory should be
understood as a "principle theory of information", and we regard this view as a
partial interpretation of quantum theory. We outline three options for
completion into a full-fledged interpretation of quantum theory, but argue
that, despite their interpretational agnosticism, the principled
reconstructions pose a challenge for existing psi-ontic interpretations. We
also argue that continuous reversible time evolution can be understood as a
characteristic property of quantum theory, offering a possible answer to Chris
Fuchs' search for a "glimpse of quantum reality".
