"The way it worked was that we’d start making something for the film and it would be written out, so we’d stop making it. Then it would be back in again, so we’d start making it again – the same thing happened with the sets. [Special effects supervisor] George Gibbs reportedly built this huge set for the ending of the film on the 007 stage at Pinewood, and they changed one aspect of the script so he had to tear it down and start again. We also spent a huge amount of time and money making an Alien suit and some other guys did the same, making an alien puppet, and the two things just don’t match up, they don’t look like the same Alien. Again, that was because it got to the stage where it just had to be done, so consequently they don’t look like each other in the final movie."