Further to that interview in the Panel Discussions podcast, there’s an interview with Greg Rucka over at io9. He explains in-depth why he goes for writing strong female characters. Not only does he explain why, but he also explains how.
So, to the question.
I have two answers I tend to give, the Quick Answer and the Long Answer. Both are entirely true, for the record.
The Quick Answer goes like this:
Q: How do you write such strong/well-realized/positively portrayed women?
A: I don’t. I write characters. Some of those characters are women.
I believe there are fair few mainstream writers who could do with learning from his example.