For me it is the fact that our blood contains iron. I earlier used to believe the word stood for some ‘organic element’ since I couldn’t accept we had metal flowing through our supposed carbon-based bodies, till I realized that is where the taste and smell of blood comes from.
yeah, exactly. I don’t know enough about the implementation details to know if it is actually consuming 0 fuel though but there’s not much work the engine is actually doing.
Great, this explains everything, thank you