When you're working on a scene, both in the script phase and also in the moment, you look around and you wait for the lightning bolt to strike you and based on your instincts tell you what the right thing to do is here. And that can result in anything from a change of dialogue to the realisation that what you thought was a dramatic scene should actually have some humour. And maybe if you stage it this way it's funnier, or if you put the camera here it tells a different story. That stuff is kind of everything when you're a director.

In fact, we actually listen to fans all the time. It's helpful because you want to get a sense of what people are looking for and what they disagree with.

When you're working on a scene, both in the script phase and also in the moment, you look around and you wait for the lightning bolt to strike you and based on your instincts tell you what the right thing to do is here. And that can result in anything from a change of dialogue to the realisation that what you thought was a dramatic scene should actually have some humour. And maybe if you stage it this way it's funnier, or if you put the camera here it tells a different story. That stuff is kind of everything when you're a director.

You used to have to make a choice. Is it a serialized television show, or is it a stand-alone or procedural? We were wildly influenced by The X-Files. Even when we created Fringe, it was the same thing. It's the gold standard of all gold standards, in genre television, and it was so wonderful because you felt so much for those characters.

As a director you have to be at 30,000 ft objectively looking at everything, wondering if you're making the right objective, emotional, story, character choices. As the writer, while you're asking all of those same questions, you're also forced by the nature of what writing is to be looking at everything under a microscope. That's the difference between the two jobs.

I think our goal and intention is to make sure that, when you watch each episode, you don't have to make that choice, but also that you can have stand-alone episodes, where a story can have a beginning, middle and end.

I asked a director once what the secret of it all was, and he said you have to be so prepared that you are willing to throw all your preparation away in the moment when you see something better. That's a phenomenal piece of advice. It's been my compass through the process of making films. But you can really only do that if you're prepared. You can't wing it.