Temporal tipping point

The Eleventh Doctor identified the 2020 Cwmtaff incident as a "temporal tipping point", explaining that it was not a fixed point in time. He claimed that such a tipping point would "change future events, create its own timeline, its own reality." (TV: Cold Blood)

Similarly, the Seventh Doctor identified the Wenley Moor Affair as a crucial nexus-point in Earth's time stream such that a countless number of futures could be claimed from that moment with near-endless divergent realities. (COMIC: Final Genesis)

Behind the scenes

 * Similar to his reference in Cold Blood, Dermot and the Doctor has the Eleventh Doctor identify 26 January 2011, the night of the National Television Awards, as a temporal tipping point.