> As I said in my original post, an organism has to reproduce. There are other factors but that one by itself is sufficient. Every organism from single celled life to plants to humans reproduces. The Earth doesn't generate baby Earths that go out into the solar system and compete for resources with the offspring of other planets.

organism: a whole with interdependent parts, likened to a living being. - "the upper strata of the American social organism"

>>> It isn't a coherent theory so you can't scientifically disprove it the way you could disprove a coherent (but wrong) scientific theory.

>> If a theory cannot be scientifically proven or disproven, does that mean that it is necessarily incorrect?

> Regarding your second question if a theory can't be objectively proven or disproven (i.e., it isn't falsifiable) then it isn't what I consider a theory.

theory:

• a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.

• a set of principles on which the practice of an activity is based.

• an idea used to account for a situation or justify a course of action.

The question was: If a theory cannot be scientifically proven or disproven, does that mean that it is necessarily incorrect?

> And the only method that I'm aware of with a track record for testing objective truth is science.

Were pre-historic/pre-scientific peoples (neanderthals, etc) unable to tell if someone was dead, as just one example?