Singularities are places where time ends for anything in them. In other words, if Bob falls into a black hole at 2:00, time will end for the matter in his body and he won't exist time-wise past 2:00. But according to the Big Bang theory, the universe began in the form of a singularity. Obviously time exists now, but we don't know if time existed before the BB singularity. Does this mean singularities are one sided as far as time goes? meaning that time must either begin or end completely in singularities. If so, what does this mean for the creation of the BB singularity?