3. Irrefutability – Does denial collapse into reliance on it?
21. Reductio ad Absurdum (proof by contradiction)
· What it is: Show a claim is false by assuming it true and deriving contradiction.
· Why test with it: Strongest refutation of rival axioms.
· Application: Assume “something else is most important.” If life ends, that
“something” loses meaning → contradiction.
· Result: Denial of life-first collapses into absurdity.
Good point — “life first” isn’t meant as a ceiling for ethics, just the floor. It doesn’t say slavery/torture are acceptable, it says they can’t even be argued about unless life exists first. Once life is secured, you still need principles of justice, freedom, flourishing, compassion, etc. But without life as the baseline, all those higher aims collapse into nothing.
My first response is really just me getting tired and not explaining the rest because just that one proof should be enough.
21. Reductio ad Absurdum (proof by contradiction) · What it is: Show a claim is false by assuming it true and deriving contradiction. · Why test with it: Strongest refutation of rival axioms. · Application: Assume “something else is most important.” If life ends, that “something” loses meaning → contradiction. · Result: Denial of life-first collapses into absurdity.
Good point — “life first” isn’t meant as a ceiling for ethics, just the floor. It doesn’t say slavery/torture are acceptable, it says they can’t even be argued about unless life exists first. Once life is secured, you still need principles of justice, freedom, flourishing, compassion, etc. But without life as the baseline, all those higher aims collapse into nothing.
My first response is really just me getting tired and not explaining the rest because just that one proof should be enough.