Just have to say this to someone....
His fundamental flaw is his belief that "observational science" is differentiated from "unobservable science" by its proximity to the present; that is to say that valid "observations" are from the "present" and that which is (by his definition) unobservable is from the past. Because of the speed of light we can only observe the past!!!!!!!!! With that, we have no capacity to observe the present nor the future (of course until a given event has already happened... and extrapolations aside). This renders both the "observational" and "unobservable" sciences as both based on past observations, and its unreasonable to conclude that a given observation (extrapolated or not) is invalid purely based on the subject of interest's proximity to the present.
Pretty sure billy mentioned this
This other dudes a fucking idiot.