- Lumic's expression of "Excellent!" is a reference to the off-key rendition of the word that the Cybermen have used in previous stories (beginning with the Fourth Doctor story Revenge of the Cybermen).
- The Doctor's comments about Cybermen in his universe confirms that the origin of the Cybermen in this universe is not a rewriting of the origins of the Cybermen on Mondas as established in The Tenth Planet. Similarly, this leaves the Big Finish Productions audio play Spare Parts intact.
- Mickey refers to his "tin dog" status, as in "School Reunion", a comparison to the Doctor's former robot companion K-9.
- The Doctor refers to attacking Cybus's factory at three points: "Above, between, below." This echoes an ancient Gallifreyan nursery rhyme that refers to the three possible entrances to the Tomb of Rassilon (The Five Doctors).
- The storage of the converted Cybermen in the cooling tunnels is similar to the events of The Invasion, where the Cyber-army was hidden in the sewers of London. Cybermen were also kept in cryogenic freeze in The Tomb of the Cybermen. In The Invasion the Doctor also used emotions to defeat the Cybermen.
- This episode is also the first time since Attack of the Cybermen that gold has not been used as a weapon against the Cybermen. The Cybus Industries tie-in site makes reference to earlier prototypes having an "allergy" to gold, stating that this was eliminated after further improvements of the Cyberman body.
- Elements similar to Spare Parts include the converted Jackie being aware of her previous identity as a human (as Sisterman Constant and Thomas Dodd were in the play). Sally Phelan's moment of awareness is also similar to Yvonne Hartley in the play.
- Although a Cyber-Director appeared in The Invasion, and was an immobile unit, the first Cyberman Controller appeared in The Tomb of the Cybermen (and later in Attack of the Cybermen) as a differently designed Cyberman with an enlarged cranium.
- The Doctor says, "I'm sorry. I'm so sorry," to the dying Cyberman, Sally Phelan. He has used these words before in the 2006 series, when discovering a diseased 'New Human' in "New Earth". The President said this in the previous episode, "Rise of the Cybermen". The phrase recurs in subsequent episodes.
- The Doctor's speech to the Lumic Cyber-Controller while walking round in circles is reminiscent of the speech he used against the Sycorax in "The Christmas Invasion" and to the Clockwork Droids in "The Girl in the Fireplace". It is also similar to a conversation about emotions between the Fifth Doctor and the Cyber Leader in Earthshock (1982).
- Mickey leaves in this episode, choosing to assume the role of his deceased doppelgänger Ricky and continue his fight against the Cybermen, making him the first companion in the new series to leave the TARDIS crew by choice. Adam Mitchell was expelled from the TARDIS in "The Long Game", and Jack Harkness was left behind at the end of "The Parting of the Ways".
- As the Doctor says goodbye to Mickey, he jokingly calls him "Mickey the Idiot". This was a nickname the Ninth Doctor used for him more harshly. The Doctor also refers to this nickname when, during his debate with Lumic, he continuously uses the word "idiot" while trying to drop clues to Mickey.
- Mickey mentions that he "once saved the universe with a big yellow truck". This is a reference to "The Parting of the Ways", when Mickey opens the time vortex on the TARDIS using a tow truck, thereby allowing Rose to return to the future and defeat the Daleks.
Other articles related to "continuity":
... The definition of probability current and Schrödinger's equation can be used to derive the continuity equation, which has exactly the same forms as those for hydrodynamics and ... If one were to integrate both sides of the continuity equation with respect to volume, so that then the divergence theorem implies the continuity equation is ...
... Jacques has not appeared in the "Threeboot" Legion continuity which began in 2005 ... Crisis miniseries have restored a close analogue of the Pre-Crisis on Infinite Earths Legion to continuity, as seen in "The Lightning Saga" story arc in ... the presidency of Earth) are no longer part of mainstream DC continuity ...
... to be used, and is based on three main types of nerve fiber injury, and whether there is continuity of the nerve ... It involves an interruption of the nerve conduction without loss of continuity of the axon ... Axonotmesis Involves axonal degeneration, with loss of the relative continuity of the axon and its covering of myelin, but preservation of the connective tissue ...
... Year Title Role Notes 2002 CBBC Herself Continuity Presenter 2003 CBBC Herself Continuity Presenter 2004 CBBC Herself Continuity Presenter Xchange Herself Main Presenter 2005 CBBC Herself Continuity Presenter Xchange ...
... pilot does not fit in with the canon of the series, ignoring continuity with Psycho II, Psycho III and Psycho IV The Beginning due to the death of Norman Bates in the ... Reflecting on the continuity issues, Robert Price writes "It seems that all the different Psychos drift into and out of one another ...
Famous quotes containing the word continuity:
“The dialectic between change and continuity is a painful but deeply instructive one, in personal life as in the life of a people. To see the light too often has meant rejecting the treasures found in darkness.”
—Adrienne Rich (b. 1929)
“If you associate enough with older people who do enjoy their lives, who are not stored away in any golden ghettos, you will gain a sense of continuity and of the possibility for a full life.”
—Margaret Mead (19011978)
“There is never a beginning, there is never an end, to the inexplicable continuity of this web of God, but always circular power returning into itself.”
—Ralph Waldo Emerson (18031882)