Plot Holes

It has already been mentioned that a certain shot reveals that Sydney isn't wearing the bullet-proof vest when she should be. Further to this, most of the shots in the climax sequence make it impossible for her to be wearing one, as you can see the contours of her chest throughout. A bullet-proof vest would flatten the appearance of this.

How did Kincaid get a picture of Syd from the Delta Lambda Zeta party in part 2? No one took any pictures of her. Aside from that, anyone who's seen pictures of Neve Campbell online will know that that's a publicity shot from Scream 2 rather than something intended to be a "real" photo.

Human is the most intelligent being on the planet