A power grid, a falling apple, a mixture of baking soda and vinegar doesn't come close to explaining what caused SOMETHING to expand suddenly to form an entire universe.<quoted text>
So we know nothing of how electricity works? We know nothing of how gravity works? We know nothing of how chemicals react?
Hey, if we didn't know eight after we climbed from the trees, then we know nothing of how anything works, that is your assertion here.
Because science postulates a sketchy theory of the origin of the universe, all subsequent theories regarding cosmic beginnings will be incomplete.