There were a lot of lessons of production to be learned. On the page, the biggest thing you learn on any TV show is how to write to your cast. You write the show at the beginning with certain voices in your head and you have a way that you think the characters will be, and then you have an actor go out there, and you start watching dailies and episodes. Then, you start realizing what they can do and what they can't do, what they're good at and what they're not so good at, how they say things and what fits in their mouth, and you start tailoring the voice of the show to your cast.

And your typical TV series, you've got your police station, your apartment, the hospital, the starship, or whatever it is, and you're constantly going back to those sets and shooting, which saves you a lot of money and time. You can do that faster because you become really familiar with it and you become really good at it.

Even then, I didn't quite know what to make of it [captain Kirk death]. I was mystified by why I was doing it, why I was so driven to do it, and why it was affecting me like it was. I still don't know what it means. It's a strange singular experience. I don't even know anyone to talk to about it because I don't know anyone who's had that experience.

I'm always tempted in the back of my mind to continue to write things in the Star Trek universe, in the novels or the comics, just because I don't get to play in that universe and I don't get to hang out with those characters any more. You spend hours upon hours of your life, day after day sitting in writers' rooms, talking about these people and these situations, and it becomes very real to you. They're friends of yours, in a lot of ways.

The creative part, with the writing of it and the vision, and finding the voice of a show and the characters, is much harder to teach somebody. It's like music. You can either play it or you can't. If you can't play music and you really struggle and work hard, you can learn, but you have to have some inner gift to take it to the next level.

When Kirk dies it was very emotional and very strange, in the moment and all the way through the process. I'd read it in the script and I'd always be struck by what I'd just done and what we were doing, and that this was my childhood hero and I was writing his death.

There were a lot of lessons of production to be learned. On the page, the biggest thing you learn on any TV show is how to write to your cast. You write the show at the beginning with certain voices in your head and you have a way that you think the characters will be, and then you have an actor go out there, and you start watching dailies and episodes. Then, you start realizing what they can do and what they can't do, what they're good at and what they're not so good at, how they say things and what fits in their mouth, and you start tailoring the voice of the show to your cast.