To defend themselves from the monster, the crew erects a defensive perimeter with terrifyingly inadequate affordance. It consists of roughly meter-high posts with eight edge-lit transparent triangles jutting out of opposite sides. When solid matter passes between any two posts, it is dealt a massive jolt of electricity. While useful, perhaps, to trap an invisible, animal-minded monster, the lack of any visual affordance to this effect seems stupidly dangerous to innocent animals and humans that might unknowingly step across its fatal path.
