The To-Do List Problem
Do you keep a to-do list, or is it something you haven’t gotten around to? How much of your to-do list do you usually end up doing?
You write a list of ten things, do three, and tomorrow rewrite it with the same seven plus three new ones. The to-do list is humanity's favorite tool for answering 'are we there yet?' — and the one we most reliably fail to finish.
Key concepts
- The Planning Fallacy
- Our tendency to underestimate how long tasks take and how much we can do — it's why the list overflows: we plan for the best case, then reality charges more.
- The Intention-action Gap
- The distance between deciding to do something and actually doing it — a to-do list captures intentions perfectly and does nothing to close this gap.
- Prioritization
- Choosing what matters most — and what to drop; a list of everything isn't a plan, since you'll never reach the bottom anyway.
- The Zeigarnik Effect
- The mind nags at unfinished tasks more than finished ones — why undone items haunt you, and why writing them down can quiet the nagging.
What to know
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01
Lists overflow because we plan optimistically — the planning fallacy makes us underestimate every task's cost, so an unfinished list is usually a forecasting error, not a character flaw.
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