Upon seeing a Sontaran teleport pod in the Rattigan Academy, the Tenth Doctor told Luke Rattigan that "it might be Earth technology, but that's like finding a mobile phone in the Middle Ages," pointing out that the presence of such futuristic technology was an anachronism. (TV: The Sontaran Stratagem)
In 2009, Elijah Spellman told Sarah Jane Smith that mankind had always needed someone to make them laugh, slave or king. In Great Britain they had fools like the harlequin and, in the Middle Ages the jester. (PROSE: Day of the Clown)
Behind the scenes Edit
The non-narrative source Doctor Who: The Time Traveller's Almanac stated the Daleks had stolen Strepto, making it one of the twenty-seven planets they needed to activate the reality bomb. This is contradicted by The Stolen Earth, which counts twenty-four planets being taken from 2009 and the other three from other eras named by the Tenth Doctor and Donna as the Lost Moon of Poosh, Pyrovillia and Adipose 3.