Original sentence: Scientists maintain the theory that gaps in contemporary knowledge of the past do not demonstrate that such speculative ancient astronaut ideas are a necessary, or even plausible, conclusion to draw.These theories are generally discounted by the scientific community, regardless of the fact that their information is mostly theoretical as well
Edited sentence: Scientists maintain that gaps in contemporary knowledge of the past do not demonstrate that such speculative ancient astronaut ideas are a necessary, or even plausible, conclusion to draw.These ideas are generally discounted by the scientific community