…es couple to and interact with some type of normal matter in some way. This isn’t a bad assumption; it’s the type of interaction we can constrain and test at this moment in time. Still, there are plenty of physical circumstances that occur out there in the Universe that we simp…
Containment, "interactions we can constrain," is the fundamental goal of physics. And other sciences too. All other sciences. It isn't just a power thing, but, yet, it is. We need to contain something else even more dangerous than what physics wants to contain.