Jumping to Conclusions
Even if this experiment is conclusive evidence of physical particles being limited to the speed of light (which it probably isn't), it tells us nothing of the possibility that consciousness itself may be able to travel to different times and places. What about quantum particles ~ aren't they supposed to exist in more than one place at a time? Similarly, perhaps they exist in more than one time at the same place too...
"The researchers also added that the test results ???confirms Einstein???s causality; that is, an effect cannot occur before its cause.???"
Travelling back in time doesn't necessarily mean defiance of Einstein's causality... beings/people may have already travelled back and there contributions/effects, if any, are already woven into te universe's tapestry. Or, perhaps it is only possible to travel back as an inconspicuous observer...
One thing I've never understood is, even if one could go faster than the speed of light, why does that necessarily mean you are going back in time? Doesn't it just mean what you are looking at is not reflecting what is actually happening at that moment? When you slow down again, the light will catch up. Similar to having a delay in audio/video over the internet... just because there is a delay in hearing/seeing your friend talking, doesn't mean they actually are talking any later.
