Abstract
A big bang universe is a universe that began. A hot big bang implies one beginning only, that is, a universe where no rebounding or reincarnating is possible, because the level of entropy (efficiency of radiation release) is extremely high.(1) An open big bang implies a universe that never stops expanding because its mass is insufficient to halt it. If we could run time backward, like movie film, we could trace the open hot big bang to singular beginning in finite time, as the Bible declares.