Has this ever happened to you? You’ve been up all night working on a
document and suddenly the computer crashes. Was your hard work saved?
Did you have a backup?
I’m sure everyone has had this experience at some point. I used to save multiple versions of the same file over and over again every time I had made a significant change. This technique worked but I would often have tens or twenties of versions of files by the end, and it would be difficult to know what was in each version or why it was saved.