Question

Can you accept the existence of something this doesn’t possess this property of interaction? And if so, how do you know which thing(s) to accept, since they aren’t detectable?

Answer 1

I can tell you that in the realm of physics and philosophy, the existence of things that don't interact with their environment is a concept that has been debated.

In physics, there are concepts like dark matter and dark energy, which are believed to exist based on their gravitational effects on visible matter, but they do not interact with light or other forms of electromagnetic radiation, making them difficult to detect directly.

In philosophy, there are debates about the existence of things like abstract objects, such as numbers or concepts, which are not physical and do not interact with the physical world, but are thought to exist in a different way.

Ultimately, whether or not one accepts the existence of things that don't interact is a matter of personal belief or theoretical framework. Scientifically, the existence of such things can be postulated based on their effects on other things that can be detected, but their ultimate existence may be impossible to prove conclusively.