Plot hole: At his arrival at the Arecibo observatory, Mulder crushes the padlock on the door leading to the control building, and then he finds the native man, Jorge, in the toilet, who hid himself in the building. There's no way Jorge could enter the building and also lock himself in there with the padlock. (00:17:45)
Soft Light - S2-E23
Plot hole: If the shadow acts like a black hole and tears apart all atoms that enter it why does it only seem to affect people (but also their clothing and anything else on them)? Surely Dr Banton would be destroying everything around him.
Answer: As he stated many times throughout the series, Mulder needed Scully to be sober and skeptical. Whenever Scully's skepticism wavered and she started questioning her own rationality, Mulder would try to restore her sense of skepticism, because he needed her to be clear-thinking.
Charles Austin Miller