[tacticalogic]

Then you exclude it in the axioms/postulates! In this case, Darwin should have said "This theory does not address the origin of life or what life is."

No mathematical axiom I am aware of states explicitly everything it does not address, nor have I ever seen any requirement of a mathematical proof that it demonstate proof, but also specify everything it does not prove.

[Alamo-Girl]

It would be an exercise in futility to state everything a theory does not address.

The example I gave should have been stated in the positive, i.e. this theory takes life as an axiom.