Copenhagen Interpretation

What is the ontological view of the Copenhagen interpretation?

The unexplained mystery of thermal radiation (among others, like the photoelectric effect) led to the theory that light comes in packages: the quantum theory. The first interpretation to explain the quantum theory epistemologically was the Copenhagen interpretation. It was first formulated in 1927 by Niels Bohr, John von Neumann, and Werner Heisenberg, and became the most popular explanation of what is actually going on at the qua...