system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How effective is barbed wire / razor wire as a defensive measure in combat? I feel like in movies all they do just make two snips and continue on.
gpt
It's good at slowing people down since actually making that clearing takes time, and during that time you are shooting at them with pre-ranged weapons since you know where the slow-down will happen.

It also forces them to go through only a few locations, since not every soldier is going to make a separate opening.