Premise: The Time Lords are a fictional , ancient extraterrestrial people in the British science fiction television series Doctor Who , of which the series ' protagonist , the Doctor , is a member . They developed a culture of custodianship and time-related technologies based on this perception which includes strictly controlled space/time travel machines ( known as `` TARDISes '' ) and monitoring devices to travel through time and to prevent time from being subverted or abused -- although actual action was described as rare in practice due to their traditional policy of strict non-interference and neutrality .
Hypothesis: Time Lords protect time.
Label: ENTAILMENT