Theory:Doctor Who television discontinuity and plot holes/The Zygon Inversion

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This page is for discussing the ways in which The Zygon Inversion doesn't fit well with other DWU narratives. You can also talk about the plot holes that render its own, internal narrative confusing.

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• Why are Clara and her copy using the pulse measuring method for detecting lying ? It is completely arbitrary and a good liar can easily hide it.

They're trying to manipulate each other. It's like Russian roulette except you have to guess who's bluffing.