Pretty sure the numbers are not comparable, not by many zeroes. Like, trillions of times more energy in the Earth's heat than humans could extract in a billion

Pretty sure the numbers are not comparable, not by many zeroes. Like, trillions of times more energy in the Earth's heat than humans could extract in a billion years. Add to that, Earth is heated by deep radioactive elements. A fission furnace. Not gonna burn out for a billion years, maybe not ever.