  This paper presents an alternative quantum theory, the Theory of Discrete
Extension, which avoids many of the conceptual problems of standard quantum
mechanics. It is a deterministic, dynamic collapse theory with a well-defined
primitive ontology.
  In place of the dual, classical concepts of wave and particle, the unitary,
non-classical concept of a discretely extended object emerges directly from the
theory's dynamic equations as a primitive ontology. Because this ontology is
unitary, the theory avoids the dilemmas of wave-particle dualism and
complementarity.
  Furthermore, the theory's dynamic equations generate correct, quasi-discrete
values of action increments and energy levels without recourse to the operator
formalism and eigenvalue postulate of standard quantum mechanics. Quantization
of the harmonic oscillator provides a simple illustration.
  The theory provides insight into the nature of a number of quantum effects
such as the zero-point energy of the harmonic oscillator. It also makes a
number of predictions that distinguish it from standard quantum mechanics and
from Bohmian mechanics.
