Theory:Doctor Who television discontinuity and plot holes/The Sontaran Experiment


 * If the Earth is uninhabited, why do the Sontarans need intelligence to invade it?
 * They might think the Humans on the Nerva Beacon are ready to fight back at any moment. Also, they are invading the galaxy and there are more humans in it. The intelligence is regarding humans in general, who have a vast empire by this point throughout the galaxy.


 * During the fight when Styre's head is knocked sideways and when Styre touches his suit his head wobbles.


 * Why isn't Styre's communications link to the General inside his ship? Why leave it outside in a rock crevis, exposed to the elements and for the humans to find?


 * Why only send one Sontaran? Numbers are surely not unavailable in a cloned race?
 * The earth is uninhabited so they don't need to send an army and since Styre can easily handle the number of humans he needs for his experiments with his robot, so there is really no point. Also the more they send the easier it is to notice them.


 * The face of the actor playing Styre has been painted black, this is clearly visible as their are large gaps between the inside of the head cast and the face of the actor.


 * In episode 2, Harry uses the word Sontaran despite not having heard it.
 * He overheard Sarah call Styre a Sontaran (from his hiding place).


 * Harry is also looking for Sarah when he meets the torture victim, despite seeing her captured by the Sontaran at the beginning of the episode. '
 * Perhaps he was looking for where the Sontaran placed her or perhaps he though she had escaped.


 * Why did Sarah Jane think that Styre was Linx? Even though they were played by the same actor, they looked completely different.
 * She might not have remembered Lynx that much and she was scared at the time; they look around about the same so Sarah was just confused.


 * Styre has five digits on each hand rather than Linx's three; this is the only story in which the Sontarans do not possess the usual three digits upon their hands.
 * Styre has been specially engineered for research purposes and as such, has been given additional digits to make his hands more dexterous for manipulating delicate equipment. In PDA: The Infinity Doctors the issue of the varying number of digits on a Sontaran hand is explored.


 * When Harry is trapped down the crevice and someone starts throwing rocks down at him, who exactly is doing it? It's never revealed.