If you define 'automatically' = adjusted by the free market = Austrian economics type
You are with BU
Otherwise there is a BIP from sipa, adjusting by some 'magic rules' in code derived by extrapolation into future....
NO thats a false dichotomy.
Both Core and BU sucks in my opinion. We would need a 3rd code, that is automatically regulating itself.
The only way we are going to achieve consensus, is if we remove the human element from the game.
Humans are the weakest link in Bitcoin. Nodes/Miners could be corrupt, could do shady deals behind doors, could be coerced, or could turn against us.
We just need to make everything automatic, that is the future, AI.