We assume what we know to be impossible, and pretend that just making ‘safe’ copies of important documents will preserve them for the future.
Do you want ECC for your important documents? It’s available now, free, without the complications of ZFS or cost of RAID 6.
If macOS can’t do it, how should we check the integrity of important files? Use a checksum, or a hash function? And which?
We take for granted that our files remain uncorrupted, but know that isn’t always true. How can we fix or even detect such changes?