system
Given the following post, respond as if you're commenting on Reddit:
human
Why can you rename, or change the path of, an open file in OS X but not Windows?
gpt
The Windows filesystem identifies files by their paths (including the file names)—if you change a file’s path, applications and the operating system will perceive it as a new file with no connection to the original.

The OS X filesystem identifies files by an independent file ID, which remains fixed if the file is moved or renamed.