Other effects in the show included models of the ships which were extremely expensive to make. We used to do our shots in front of a blue screen and they'd put the effects on after.
We may simply not be wise enough to do some of the kinds of engineering things that people are talking about doing.
Often, the pretexts for starting a war are not real shortages of land, food or fuel, but rather perceptions - like fear, honor and perceived self-interest.

