If I step back from it, then of course it’s complete nonsense. But I always think that it’s important that when you watch Doctor Who, you are completely invested in it. You’re emotional: wiping away a tear, frightened, laughing your socks off. All that stuff.

There’s a saying about fridge logic - that when you go to the fridge afterwards, you’re thinking ‘ah, that didn’t really work’. My response always to fridge logic is: who fucking cares? If you’re still thinking about it by the time you’ve got to the fridge, the show has already won.