Speaking Moffat - Darkness, Light, And A Blind Doctor
(Or: Holy crap, I finally got that)
The Doctor’s current blindness is part of a long-running light-and-dark theme in Doctor Who. Many Whovians, including myself, have analysed it to great lengths, but I have never quite gotten it in terms of metaphoric meaning. Until now. And holy crap - the implications.
So here is how it goes: Darkness and shadows stand for virtual reality. And being blind, then, is a metaphor for being inside the Matrix.
Remember the name of the Veritas-test in Extremis?
A test of shadows. The test whether you are being kept in the dark or not.