Bohr’s principle of complementarity also addresses the underlying relation of physics to consciousness. The experimenter’s choice of experiment determines which mutually exclusive aspect of the same phenomenon (wave or particle) will manifest itself. Likewise, Heisenberg’s uncertainty principle demonstrates that we cannot observe a phenomenon without changing it. The physical properties which we observe in the “eternal” world are enmeshed in our own perceptions not only psychologically, but ontologically as well.
