Board Thread:Episodic and Issue Discussion/@comment-4928331-20130305235618/@comment-5624498-20130307165333

Impulse's main reason for going back in time was to prevent Blue Beetle from betraying the human race. That doesn't mean that's the only event that leads to an apocalyptic series of events -- but that doesn't mean the heroes are destined to fail either. All we know was that Impulse's time trip wasn't simply about saving Flash and curing Neutron and there was more to it than that.