@nprofile1q... So I have a depressing take that it's all about entropy at every level. Interstellar gas extracts entropy by clumping into a star. Fusion extracts more entropy by letting the atoms fall into a lower energy state. The heat is radiated into space, but some hits the planets. The Earth heats up and life evolves to extract entropy before it's radiated back into space. The food chain is all just entropy extraction. Humans build economies and technology to extract more entropy. All similar...