2:13:25If Energy Can’t Be Created… Where Did It Come From?
Two hours and thirteen minutes chasing one accounting problem: if energy can never be created, then nothing in the universe was ever made, and something still had to start the chain. Calm Science walks the chain all the way down, from a ball hitting a floor back through muscles, food, photosynthesis, sunlight, fusion in the sun's core, and hydrogen assembled minutes after the Big Bang, and shows that not one joule was manufactured at any link. The answer on the table is that the total energy of the universe may be exactly zero, the positive energy of all matter balanced against the negative energy of the gravitational field, which is why Alan Guth called it the ultimate free lunch. Along the way it rebuilds the whole supporting structure: Emmy Noether proving in 1915 that energy is conserved because the laws of physics do not change with time, Rumford boring cannon barrels, Joule measuring the mechanical equivalent of heat, the sun turning 4 million metric tons of mass into 3.8 x 10^26 joules a second, Hawking radiation taking 10^67 years to give a black hole back, and Pauli inventing the neutrino rather than let the books fail to balance. It ends honestly, at the edge where general relativity and quantum mechanics stop agreeing, with the answer that energy did not come from anywhere because there is no anywhere outside the universe for it to have come from.