> Identical files will always have the same hash and can more easily be moved from one torrent to another (when creating torrents) without having to re-hash anything. Files that are identical can also more easily be identified across different swarms, since their root hash only depends on the content of the file.

As a question for someone who knows better - does this mean that you can download single files within torrents themselves? I imagine if each file is independently hashed, this should be possible.