  We show how the quantum potential arises in various ways and trace its
connection to quantum fluctuations and Fisher information along with its
realization in terms of Weyl curvature. It is a quantization factor for certain
classical systems as well as an expression for quantum matter in gravity
theories of Weyl-Dirac type. We extract theories and examples from the
literature, providing connections and interpretations, and make a few new
observations.
