How can you really be sure that time is just going in one direction? Does time even exist? Is it just a man made measure? What is time, really? In my opinion time is a limitation, invented to control people. If time did not exist and if time was not in our consciousness then our minds would not be limited by time and, then just imagine what possibilities there could be? Perhaps the one reason why we can't go forward or backward in 'time' is because it is in our consciousness that time is linear. If time did not exist then we might be able to travel to a different moment in a different dimension? I also think that if we were not bounded by time, humans would follow their inner sense of timing as do the animal and plant kingdoms, think how much we would be in sync and in flow with each other then!