Explain Andre�s role on the show.

What is his role? I think he�s got a couple of roles. One is to try to remind the writers of scientific theories or facts that they can continually put into stories they already have to give it more integrity, more believability. And another is if they create some scientific idea, [he makes sure] that it has real believability, that they mould it in a way that we could believe in what we�re trying to do, or talking about - that it could be possible.