I think Douglas was a real one-off. He was so clever and so intelligent and so well read in real science that he could make science fiction work as well as it did. And just such fun to have around, he was just such a lovely man. ↗
I'd always wanted the show to be more reality based science fiction, something along the lines of The Day the Earth Stood Still, which I consider to be the classic science fiction film. ↗
To me, fantasy has always been the genre of escape, science fiction the genre of ideas. So if you can escape and have a little idea as well, maybe you have some kind of a cross-breed between the two. ↗