Theory:Doctor Who television discontinuity and plot holes/The Abominable Snowmen

my first posting for this fourm
 * The TARDIS landing sound is slower then usual.
 * The TARDIS is a bit faulty, it had trouble materializing. The materialisation sound varies from time to time, as would be expected from such an old vehicle.


 * Sapan, one of the monks, sounds Welsh.
 * The TARDIS translation circuit tends to produce accents which the listeners will interpret as something familiar to them.


 * In Episode One, snow is seen on the TARDIS scanner; however, when the travelers emerge not a flake is visible [See Full Circle.]
 * The TARDIS scanner was likely showing a patch of the landscape relatively nearby which did have snow.


 * Thonmi on one occasion says that the holy ghanta has been missing for about 200 years when the figure should be about 300.
 * The term "about" is used to indicate an approximation. People often approximate when talking about something that happened many years ago.