Restock exercise: smaller packs, same required quantity
Use fictional stock and replacement packs to check whole-pack rounding, totals and unapproved substitutions.
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Document exercise: one missing “not” reverses the rule
Compare fictional originals and converted text for changed negation, version conditions and defaults.
Music planning: does a tempo change update the timing?
Check beat-to-second conversion with a fictional arrangement, separating arithmetic duration, audio tails and unheard quality.
Lighting schedule: midnight boundaries and manual overrides
Use fictional rules and timestamps to check overnight intervals and the precedence of a manual override.
Game of Life: same grid, different boundary rules
Compare fixed-dead and wrapping boundaries on a fictional grid, preserving neighbour counts and synchronous updates.