Parkinson's Heuristic: Only act when you barely have time to finish

Ben Pace, writing on LessWrong, introduces the Parkinson's Heuristic: "The only time to do anything is when you don't quite have enough time to do it." He builds on Parkinson's Law (work expands to fill allotted time) and a common Pareto observation — the last 20% of time before a deadline often produces 80% of the value. Rather than trying to make all time that productive, Pace suggests the opposite: delay working until the deadline is imminent. When he has no spare time, he prioritizes ruthlessly, cuts unnecessary features, and ships what's barely good enough. He cites examples: clearing email only when overloaded, designing event websites in the final days, and organizing the entire LessOnline conference in one month instead of three when a different project ended late. At Amazon, a similar "working backwards" culture starts with a press release for the product before any development begins.

The heuristic challenges the common productivity advice to start early. Pace argues that early starts lead to overthinking, perfectionism, and wasted effort on details that won't matter. The real skill is identifying the first hard deadline and arranging other tasks to compress against it. He admits that every shipped website feels embarrassingly undercooked at launch — yet after shipping, he never looks back. Most imagined requirements turn out to be unnecessary. The key is to "seek out these moments" — to constantly ask what can be shipped now to force everything else into shape. This is not laziness but a deliberate strategy to reduce work-in-progress and focus on what truly moves the needle.