Schrödinger's backup: not actually recovered until you try to restore IT

Schrödinger's Cat, the famous 1935 thought experiment, imagines a cat that, for reasons rooted in quantum physics we need not dwell on here, is simultaneously alive and dead. In a landscape of relentless cyberattacks and mounting infrastructural complexity, a routine backup task can appear finished, with every box ticked and every check made. The job is not actually done, however, until it has been verified as fully ready for recovery in the event of cyber disaster. A task that looks sorted