Resumen de Time itself goes back to the future
Sean Carroll and cosmologist Alan Guth of the Massachusetts Institute of Technology have shown, how time itself can arise organically from simpler principles, then flow in opposite directions in adjacent universes. Guth and Carroll's work is motivated by a problem vexing physicists and philosophers: why the time's arrow points in just one direction. It's true people can only remember the past, but the laws of physics don't much care which way time flows: any physical process run backwards still makes sense according to those laws
