I am not an academic physicist, just a person who is interested in the subject. But I think I have a handle on the basics. But from all that I have gathered, it would appear that there really is no such thing as things. We say that there is a wave-particle duality. That photons for example, act as both a particle and a wave. But the reason we say it behaves as a particle is that it will deflect or impart energy. But is the reason it does this because it is an actual object or because it will simply not interact with other things at certain energies? Again, it would seem to me that all that exists, or "matter". Is not really a thing or an object, but just a set of energy functions that will interact with each other but not other energy functions. The energy functions that make up my body will interact with each other, but will not allow me to interact with a wall. But it doesn't mean that there is some sort of object there. I think I may be getting a little deep in the weeds. But in sum, seems to me that the universe is really nothing more than just a huge mathematical function that can be solved at some points to indicate matter. Thoughts?