[quote][b]Posted by:[/b] ToastyWaffles The Doctor could fix the Warhammer 40k universe by travelling back in time before all the -blam!- happened and stopping it. That'd be the only way.[/quote] Stopping what exactly? How? The only way to "fix" the 40K universe is to kill all the humans everywhere. Humanity is the main reason chaos is so powerful, and bombing them back to the stone age would only delay things for a bit.