Theory:Doctor Who television discontinuity and plot holes/The Pandorica Opens


 * 5145 is not in the 51st century.
 * While scanning Stonehenge, how did River Song miss the Cyberman head?
 * How is the Cyberman able to function without a head inside his "helmet"?
 * How is a Roman Gladius able to penetrate a Cybermans armor when 21st century firearms cannot?
 * If the trap involving Romans, Pandorica and Stonehenge was built from Amy Ponds memories, why are there pieces of Cyberman scattered around?