Easy way to get you all out of this.
*Builds one Dalek and one time machine. Sends Dalek back in time, about 10 billion years ago, with orders to expand, and research in a way that would not interfer with what we view the timeline as, with emphasis on researching a way to defeat the Reapers. It also has orders that if it doesn't succeed in creating a military 100 time larger than Danny's then it has to start over again. If it has done that by this point in time then it is to make contact.*
O look, there's my Dalek coming back with a huge fleet and a Reaper beating device.
