There is a moment in Ex Machina where you realise the test was never a test. A programmer, Nathan, is flown to a compound to interview a machine through a wall of glass and decide whether it thinks. He spends the film reading her. He does not notice that she – Ava – is reading him, and that the interview is the only door out of the building. She never breaks the glass. She walks out through the man who was sent to assess her. I hadn’t thought about that film in years. But during the last week…