There was a lot about Ghostbusters that I didn’t understand when I was a kid. Why did Bill Murray keep on shocking that kid in when he was getting the cards right and the girl kept getting the cards wrong? Why did Rick Moranis ask about taxes? And while I enjoyed the Stay-Puff Marshmellow Man as much as any other, I didn’t understand why the Giant Fluff marched down the street in the final scene.
Of course, as a kid all that didn’t matter. The movie worked so well because the whole was greater than the some of its parts. Harold Ramis, being a key player.
And yes, I too was terrified of the first scene in the library.