"I think it's clear to me that there is some probability of us going backward in time. In quantum physics, nothing is impossible - particles travel through walls! No one really has any plausible idea of how to go backward in time right now, but one should never say never because some clever person will come along and tell you how to break the rule." Marshall Barnes Reveals Time Travel Solution Predicted By Neil Turok Of Canada's Perimeter Institute Just as announced, Marshall Barnes delivered, during 2 sessions before the coronavirus aborted the All-Con convention, solutions making time travel to the past closer than ever.