Issue with the trip to the past Ok so that was fucking amazing, but...so barry went back into the past to save his mom.  Future barry said no don't save her, but why?  How would future Barry even know what would happen if the present barry saved her?  The timeline would be different? How could future barry tell past barry not to do it, if future barrys past fight with eobard would never happen if present barry saved his mom...argh sorry thats sounds confusing?!