For a moment he just looked at her and then became very interested in the part of the machine he was examining. "I don't think anyone would believe me, I'm not that intelligent."

He knows his way round an engine but space travel is something different. That's not really the problem of course. Dead people can't invent, even if they were technically not dead at all. Especially then, really.

He could still ask the questions though, pass the information on to someone else who could invent it. "Learning as much as we can is not a bad idea though, there has to be a positive of being taken from our worlds."