How are lights "mysterious"? I mean, it's not like "lights" is something just invented. And, while I'm not dispariging the expert credentials, it doesn't take

How are lights "mysterious"? I mean, it's not like "lights" is something just invented. And, while I'm not dispariging the expert credentials, it doesn't take an "expert" to say, "yeah, drones." Drones haven't just been invented either. Ohh "mysterious lights", must be aliens... That's like going to a sci-fi movie set, seeing someone in costume and writing an article "aliens spotted, makeup expert consulted."