Why would mathemeticians employ a concept and symbol for something that does not exist?
Is infinity beyond comprehension, study, and use only because it is not tangible?
Is infinity totally beyond reason?
Does infinity have any basis in reality at all?
Which is more reasonable to assume exists, infinity or NOTHING?
If there really is such thing as a WHO, how would you expect/predict it to manifest itself, by CHAOS or by DESIGN?
I am able to collect and organize data by the simple, unaided eye and conclude, when I read your posts, that there is a WHO at the other end of cyberspace communicating with me. Or is it more resonable to assume at first that there is NOTHING behind that data seen by my eyes?
But can I put that WHO under the microscope or place it in front of everyone to see? No, because you are more than a physical body. But I've still arrived at my conclusion by gathering and organizing data, and it is not at all an "anti-rational" conclusion.
Now, if someone were to propose that they have a series of tests or experiments that would make the WHO/consciousness more visible, or understandable, would you snarl down your snoot at them because it is "impossible" to place it under "scientific" examination? If so, you would not make a good scientist.
Because it is useful in mathematics. However, it doesn't exist in nature. That is why it is an abstract, rather than concrete, concept.