Stock–Sanford Corollary
A humorous corollary to Parkinson's Law: "If you wait until the last minute, it only takes a minute to do." A tongue-in-cheek defense of procrastination.
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Origin
A corollary to Parkinson's Law — C. Northcote Parkinson's 1955 observation that work expands to fill available time — the Stock–Sanford corollary offers the counterpoint that work is equally compressible. Its origins are disputed: the corollary appears to have first been added to Wikipedia as an unsourced anonymous edit, and its subsequent citation in other publications may be a case of citogenesis, in which an unsourced Wikipedia claim acquires apparent credibility by being cited elsewhere.
Updated February 22, 2026