I want to know the answer to the following question:
What does file history make possible?
All the background I'm provided with is that "A new "File History" function allows incremental revisions of files to be backed up to and restored from a secondary storage device, while Storage Spaces allows users to combine different sized hard disks into virtual drives and specify mirroring, parity, or no redundancy on a folder-by-folder basis.". Is that enough to answer the question?