Theory:Doctor Who television discontinuity and plot holes/Frontier in Space


 * If the Master's device makes one see one's greatest fear, why does Jo see the ship change shape in episode one?
 * The implication is that she is seeing the effect of the device being turned on, but it's still an error; Jo wouldn't be afraid of a Draconian ship any more than any other kind of spaceship.
 * The fear of the other humans would likely have a psychic influence at that point to push her perception in that direction.


 * If the Master's device makes Jo see people as Drashigs at first, then why wouldn't she see them every time she hears that sound?
 * Different fears are foremost in her mind at different moments.