Time travel is only possible if there is a meta-time. Time travel is only possible if our physical time is fake, in a sense that it is not the real causal chain; and the meta-time is real, in a sense that it is the real causal chain.
For example, if our so-called physical world is actually a computer video game simulation, then the “physical” laws and the “physical” time are fake, in a sense that they are illusions simulated by a computer. The world to which that computer belongs is our meta-time. That meta-world is the real physical world. That meta-time is the real causal chain.
— Me@2012-10-01 12:53:48 PM
— Me@2012-10-03 02:21:45 PM
— Me@2012-10-05 11:24:43 AM
2012.10.06 Saturday (c) All rights reserved by ACHK