Is there a fundamental difference between backups and version control?

Question

How does version control differ from plain backups?

Let\'s forget about the feature decoration, and concentrate on the soul of version control. Is there a clear line

Answer 1

There's certainly a grey area between them, however I would define as follows:

Version control is triggered by a 'write' action, where as backup is generally triggered by a time interval.

Backup software can be configured to run every second, and not store data if no changes have occurred, but that's not enough for it to be considered version control in my eyes, since it is possible for a file to change twice in a second.