query: Why can't the Doctor visit a particular point in his timeline to return to Gallifrey (at least temporarily)?
positive_passages.docid: 157026
positive_passages.text: Why can't The Doctor save his own planet from destruction?
negative_passages.docid: 100598
negative_passages.text: Why did the Daleks bother to leave Adelaide Brooke alive?
negative_passages.docid: 90298
negative_passages.text: Why doesn't the UK ask for travel bookings for a tourist visitor visa?
negative_passages.docid: 123946
negative_passages.text: Why didn't Doctor Strange wind back the clock way before Thanos got any of the Infinity Stones?
negative_passages.docid: 92178
negative_passages.text: Why didn't Isildur's Heir come forward sooner?
negative_passages.docid: 42489
negative_passages.text: How to disable "time travel" entirely?
negative_passages.docid: 133776
negative_passages.text: Why couldn't River Song's memories bring back The Doctor in the rebooted universe?
negative_passages.docid: 130248
negative_passages.text: Why couldn't Bond have backup at the battle of Skyfall?
negative_passages.docid: 128319
negative_passages.text: How could the Doctor have healed this character’s hand?
negative_passages.docid: 102847
negative_passages.text: Why can't the Avengers go back in time and bring an earlier self of the deceased?
negative_passages.docid: 128541
negative_passages.text: Something that is impossible but has happened
negative_passages.docid: 54826
negative_passages.text: Why Doesn't the Ministry Ever Modify the Dursleys' Memories?
negative_passages.docid: 58136
negative_passages.text: Doctor Who: Big Bang 2.0 is driving me crazy
negative_passages.docid: 50377
negative_passages.text: How many regenerations does the Doctor have after The Time of the Doctor?
negative_passages.docid: 112399
negative_passages.text: Why can't surgery be done by transporter?
negative_passages.docid: 143606
negative_passages.text: Why didn't any Death Eaters come back as ghosts?
negative_passages.docid: 55772
negative_passages.text: Time/space traveling story where a person travels through a portal in the London Underground