Time sensitivity

Time sensitivity or time awareness was an ability possessed by individuals or species that were sensitive to the ebb and flow of time. Tharils were one such species and were highly prized by humans as they could navigate the time lines. Dwarf star alloy was the only substance that could hold time sensitives like Tharils. (TV: Warriors' Gate) Time Lords could detect time sensitivity in others easily. (AUDIO: 1963: Fanfare for the Common Men) The Unnoticed used time sensitives to alert them of the presence of time travellers or planets with time travel capability. (PROSE: The Book of the Still)

Time sensitives could also manifest amongst human populations. (PROSE: Walking to Babylon, Camera Obscura, The Parliament of Rats; TV: Human Nature / The Family of Blood)

Another species which was time sensitive was the one which Eve belonged to. As they were time sensitive, they were deemed a threat and were exterminated during the Last Great Time War. Eve was the only survivor. (TV: The Mad Woman in the Attic)

Aside from certain select organisations, humans did not even partially grasp the significance of the various temporal factions for much of their history. By approximately the 51st century, humans had some awareness of Time Lords, though representatives of that species, such as Sabalom Glitz tended to think of them as almost magical, at the same time not seeming to take them entirely seriously. (TV: The Mysterious Planet) The 51st century Time Agency has some knowledge of Time Lords and the Time War, with Time Agent Jack Harkness regarding it as "just a legend". (TV: The Parting of the Ways)

By contrast, five billion years later, Jabe, a member of another, Earth-derived species, the Forest of Cheem, seemed cognisant of the Time War and the loss created by it, in apparent contrast to the humans of that era. (TV: The End of the World) In the Humanian Era, Lassar of the Krillitane had knowledge of the Time Lords and their extinction (TV: School Reunion), as did the Sontarans (TV: The Sontaran Stratagem) and Rosanna Calvierri. (TV: The Vampires of Venice)