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I can only speak of on Linux. If you know the disk is bad, clone it, with ddrescue, and fix the clone. But in future RAID and backup remotely. Also, next gen filesystems like ZFS and Btrfs for check sums and self healing and subvolumes with send/receive deltas between them.
Age of Earth will be my guess.
They won’t want their kids exposed to all that scientific consensus showing it’s about 4 billion years old.