Just to illustrate, here is an important scenario which is not addressed by SuperDuper, but where verification is essential to maintain data integrity:
Copy Disk 1 to Disk 2 using SuperDuper
During the copy, contents of Disk 1 (or Disk 2) are altered. This can happen very easily, because both disks are available to the user during the copy operation. It's possible for the user to make changes, or other applications to make changes, with or without the user being aware of it.
Without verification, the user believes Disk 1 and Disk 2 are identical.
However, in this situation, they are not.
Verification not only reveals the existence of the differences in data on Disk 1 and Disk 2, but also pinpoints and identifies the exact differences, so the user can be aware and determine how to proceed.
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