Forum:Doctor Who television discontinuity and plot holes/Major inconsistencies and retcons

On some instances we have simply gotten informed of previously vague information. We have learned for example, the name of the the Doctor's people. On other occasions, the Doctor Who Universe has often contradicted itself and on some occasions, however, major rectons have occured that have changed our understanding of the universe. This list includes only changes that directly changes what we knew before, rather than new information that only fills in information. Some of these retcons have provoked major controversy amongst fans.

==Major retcons=

The Doctor
Retcon: The Doctor stole his TARDIS. (DW: The War Games)
 * The Doctor built his TARDIS.

Retcon: The Doctor has two hearts. (DW: Spearhead from Space)
 * The Doctor has one heart. (DW: The Edge of Destruction)

Retcon: The Eighth Doctor describes himself as half-human. (DW: Doctor Who: The TV Movie)
 * The Doctor has a fully alien ancestry (later, Gallifreyan ancestry).

The Daleks
Retcon: The Doctor had destroyed the planet Antalin, rather than the real Skaro. (EDA: War of the Daleks)
 * The Seventh Doctor destroyed Skaro.