Theory:Doctor Who television discontinuity and plot holes/Nightmare of Eden


 * In episode two, K-9 cuts a hole in the wall, and it is glowing red-hot. Yet a few seconds later, when the Fourth Doctor and Rigg lift it away, it's cool.
 * This is a futuristic space age material that absorbs energy faster than modern alloys.


 * Dymond consistently calls his ship 'he-kayt', whereas everyone else refers to it as the 'he-ka-tay'.
 * It's his ship, he can pronounce its name any way he wants.
 * Also, variations in pronunciation of lots of names are really very common.