How much did you come in contact with any of the science input? How much were you aware you were getting real science advice?

We were aware of it, we were aware of it. I think there were people actually on the set. I know certainly during the first couple of features we had a scientist on the set and I knew that we were we were being helped in terms of the science by professional people. I�m not too clear on how much of an involvement they had.

Some of the stuff that we did was fantastic, fantastical. Many things were a projection of current knowledge. That if we had come this far in science at that time, where would we be in another 200 years? And so there was considerable logic involved in many of the things that we were able to do, based on, as I say, the knowledge at the time.