[s10e6] Extremis Page

The episode's central mystery involves the , an ancient text in the Vatican's secret library that causes anyone who reads it to commit suicide.

The simulation is so perfect that people only realize it is fake by attempting to generate random numbers; since computer code is pseudo-random, everyone in the simulation produces the same sequence. [S10E6] Extremis

The Doctor (Peter Capaldi) discovers that the "real world" he is in is actually an incredibly detailed computer simulation created by an alien race known as the Monks. The episode's central mystery involves the , an