I find objective definitions to be relatively rare, even in nature.
you're right.
There's always something going on in human heads when we try to be "objective".
"self-evident" suffers from the same hardship.
In fact, "The Universe", whatever it is, seems entirely to escape human definition on every scale.
"A man's reach should exceed his grasp" is what my great-Aunt Gretta taught me when I was living with her. She also taught me to disbelieve authorities of every kind.
We should try to do what we cannot really do, because if we don't try, we live worthless lives succeeding at being unremarkable.
What I'd like to do, in my grandest schemes, is to displace The R for Rockefeller Party, commonly boasted as "Republican", and the Council of Foreign Relations and various superior and inferior associations aimed at corralling the more talented humans into a trite world dominance schema, and even the British Crown, from any significance in the destiny of this planet.
I grieve that some scions of the Rockefellers have seduced the Democrats and the Union bosses, and nearly shut out the hope that humans can in large numbers become significant determiners of their own destinies.
We need a new union of peoples and nations built up on principles of the sort that the American revolutionaries and founders sought, a new design to prevent hegemony by organized special interests or monied elites, or royalty, or lying "authorities" professing any kind of superior knowledge. OK if anyone actually has some better understanding to share, but always having to brave the wild seas of babeonian skepticism.
Maybe I should move to Missouri where the state motto is "Show Me".