You should read Karl Popper's Conjectures and Refutations.
You can be open to new evidence defining what objective truth is without dismissing the existence of objective truth due to unknown unknowns.
You can be open to new evidence defining what objective truth is without dismissing the existence of objective truth due to unknown unknowns.
"Why is it morally superior to protect life?"
Because I like it. Because it's life's prime directive to perpetuate life and I am a lifeform. Mumblemumblegod. Pick whatever you like. :)
It's kinda funny because you're making conjectures that are explicitly addressed in the book.