Coincidence

According to Romana II, coincidences were a statistical inevitability, and they were bound to happen sometimes. (AUDIO: Subterranea) The Eleventh Doctor claimed to believe that coincidences were what the universe did for fun. (TV: Closing Time)

Statistically, events on their own would be considered potential coincidences or anomalies until checked against similar examples. (TV: Adrift) Recurrence tended to mean that apparent anomalies might be connected, and hence were not coincidences. (AUDIO: The Thirteenth Stone)

The Woman did not believe in coincidences at all. (TV: The End of Time)

Claims that patterns were mere coincidences were sometimes made to cover up a secret, even a conspiracy. (TV: Adrift)