The Unseen

We explain the scene in terms of the unseen. What do we see? We see sunlight, you see light in general, we see sunlight. And just by interpreting the sunlight by passing it through our spectroscopes, a long chain of causal reasoning and explanation takes us back to the surface of this vast sphere of hydrogen helium gas which is the sun. No instrument can survive in the sun. These unseen reactions fusion reactions deep in the core of the star. Not only in practice, but even in principle cannot be observed in principle I say because to see something means. Well, it should mean it should mean something like being able to look at something having an instrument - whether it's your eyes