system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can libraries let people rent movies for free but torrenting a movie is illegal?
gpt
Wow there is a lot wrong in this thread. Libraries do not need a license to rent out books or movies. They purchase every copy (usually from wholesalers), which means they now have the right of first sale, which essentially says that they can do whatever they want with that copy, including loaning it out or reselling it. Meanwhile, torrents create copies of the content. On a DVD, the content stays on there, no copy is made. 

If you wanted, you could do the same thing. Do you need anyone's permission to loan a DVD to a friend? Well neither do libraries.

All goes back to what copyright actually is: the right for a content owner to determine when copies can be made. If no copy is made, no copyrights have been violated.