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In “Extremis,” it seems as if the alien projectors are intended to

holographically simulate possibly all of planet Earth.

However, there are only “portals” to a handful of places in the projector room, among which are the Vatican, the White House, the Pentagon, CERN, and so forth.

So if the projectors project the whole Earth, why do they only seem to be projecting certain locations?

This would tend to suggest that the aliens are only simulating important places, which would make sense: they want to model the places that would pose a threat to them when they really attack. While the nature of Earth society as a highly interacting system means that this would be impossible in reality (how can you simulate people walking into the White House if you don’t know where they should be walking from?) we can probably attribute this to alien technology.

But if the projectors only project certain places, how do we explain Bill, Nardole, and the Doctor being part of the simulation?

How much of the Earth do the projectors simulate?

  • 3
    As Nardole said, they projected everything. The whole Earth. Possibly the "portals" were just some kind of bookmarks; shortcuts for quick access to key places. – Mr Lister May 21 '17 at 20:38
  • Why are Bill, Nardole & the Doctor's being part of the simulation need explaining? – Kyle Kanos May 21 '17 at 22:07
  • @KyleKanos - They don't, precisely. That would only need to be explained if the machines were somehow only simulating the power centers of the world. – Adamant May 21 '17 at 22:37
  • apparently they project too much to expend any energy on producing a decent set of random numbers : p – danl May 23 '17 at 14:13

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