Often you hear stories about never working with children. I disagree because children still have that residual magical thinking. They haven't had their imagination knocked out of them by turning into adults and life experiences.
Science fiction is a way that I can go into the abstract, go into the imagination, and audiences are still willing to go along for the ride.
I was always shocked when I went to the doctor's office and they did my X-ray and didn't find that I had eight more ribs than I should have or that my blood was the color green.
I don't want a perfect character, I want a character who has, as strange as it sounds, some humanity, some flaws, some needs.