Take a Look Inside
Open a focused preview of the supplied pages, sheets or working views.
One self-contained HTML file, a quick start, an evidence record and a checksum manifest. No install, account or subscription.The tool works offline and makes no network requests. The publisher receives no copy of what you enter. Records stay in this browser, but browser storage is not encrypted or protected from other people using the same browser profile.Pay once for this version and reuse the downloaded file indefinitely. Future major versions and continuing support are not included unless they are stated separately.A guess for any ordinary job: a low and a high in minutes, and how sure you are that the result will land inside it.A timer that stores when you started, so it keeps going if you close the page, and a clock that stays hidden unless you ask for it. You can also type the minutes.A guess that is locked once it is saved, so the record shows what you expected and not what you remember expecting.A first card that is a live worked example: guess a small job, time it, and see the two side by side.A record worked out from your own results, kind of job by kind of job, that shows nothing until there is enough to say, and no scores, streaks or targets.Beside your next guess, what jobs of that kind have usually turned into.A comparison of your earlier results and your latest, from ten results, that describes the record and never says better or worse.The words of the practice this comes from, Prediction Before Action in The Evidence-Based Life, quoted in the tool, with a link. You do not need the book.Five short optional lessons in a chat between Heron and EBL, each with Heron's read of your own record.A screen that follows the clock and warms when you record a result, with a control to hold the tone and one to keep it dim.Export and import, so you can back up or move your record whenever you want, and a printable record.Works on one device at a time. Clearing your browser's site data clears it, so export a backup if you want to keep it.
What It Is For
A private record of your guesses about how long jobs will take, and what actually happened. You guess a range and say how sure you are, do the job, and record the minutes before you explain anything. Your guess is locked once it is saved, and the record shows how your results run against your guesses, kind of job by kind of job. It is a working version of Prediction Before Action from The Evidence-Based Life.
Intended for: Anyone whose jobs keep taking longer, or sometimes shorter, than they expected, and who would like to see the pattern in their own record.
What Exists Behind This Page
This preview is tied to the built edition and its recorded release state. It is not a promise that the product is already available or that using it guarantees the outcome.
- It never sends anything anywhere: there is no account, no sign-up and no network request, so the jobs you type and the minutes you record stay in your browser, and there is no service behind it that could change how your data is handled later
- A saved guess cannot be edited, so the record never drifts to match what happened
- The clock is hidden while you work unless you ask to see it, and the minutes are recorded before there is room to explain them
- Nothing is scored: a result outside your range is information for the next guess, and the record waits for enough results before it shows any pattern
- It is a working version of a named practice, with the practice's own words quoted, and it does not need the book to use it
- 1 prepared edition
- 3 inspectable customer-page previews
- 12 named sources with stated use and transfer limits
Claims boundary: This is a personal record of guesses and results. It does not assess attention, memory or any condition, it is not medical advice, and it does not replace professional support. It does not say that keeping a record will improve anyone's estimates.
Three Decisions It Helps You Make
- 01
What observable evidence would justify confidence in this specific situation?
- 02
Which bounded practice would reveal whether the skill is improving?
- 03
What evidence would justify continuing, reshaping, pausing or stopping?
Price and Package
What this edition does not promise
- This is a personal record of guesses and results. It does not assess attention, memory or any condition, it is not medical advice, and it does not replace professional support. It does not say that keeping a record will improve anyone's estimates.
- A working aid, not a guarantee of a commercial, career or personal outcome.
- It does not replace legal, regulatory, clinical, financial or employer-specific advice.
- Human release review and fulfilment testing remain required.
Source Corpus Acknowledged
The customer evidence record names each source, its design use, transfer limit and review requirement. Sources inform the design and do not endorse Stratogenic or validate the finished tool.
12 named sources and transfer limits
- Buehler, Griffin and Ross, Exploring the planning fallacy: Why people underestimate their task completion times (Journal of Personality and Social Psychology, 67, 366-381, 1994) — Informed the product design. Limit: Review again before material use.
- Kahneman and Lovallo, Timid choices and bold forecasts: A cognitive perspective on risk taking (Management Science, 39(1), 17-31, 1993) — Informed the product design. Limit: Review again before material use.
- Fischhoff, Hindsight is not equal to foresight: The effect of outcome knowledge on judgment under uncertainty (Journal of Experimental Psychology: Human Perception and Performance, 1(3), 288-299, 1975) — Informed the product design. Limit: Review again before material use.
- Moore and Healy, The trouble with overconfidence (Psychological Review, 115(2), 502-517, 2008) — Informed the product design. Limit: Review again before material use.
- Roy, Christenfeld and McKenzie, Underestimating the duration of future events: Memory incorrectly used or memory bias? (Psychological Bulletin, 131(5), 738-756, 2005) — Informed the product design. Limit: Review again before material use.
- Roy, Mitten and Christenfeld, Correcting memory improves accuracy of predicted task duration (Journal of Experimental Psychology: Applied, 14(3), 266-275, 2008) — Informed the product design. Limit: Review again before material use.
- Nelson and Hayes, Theoretical explanations for reactivity in self-monitoring (Behavior Modification, 5, 3-14, 1981) — Informed the product design. Limit: Review again before material use.
- The Evidence-Based Life, Prediction Before Action (chapter 6), the practice this tool adapts — Informed the product design. Limit: Review again before material use.
- Stratogenic editorial judgement: the three levels of sureness, the thresholds of three, five and ten results, the median, and the rule that a saved guess cannot be edited — Informed the product design. Limit: Review again before material use.
- Samaritans — Informed the product design. Limit: Review again before material use.
- Web Content Accessibility Guidelines (WCAG) 2.2 — Informed the product design. Limit: Review again before material use.
- OWASP HTML5 Security Cheat Sheet — Informed the product design. Limit: Review again before material use.
Corpus review: 2026-09-21. Provider documentation is operational guidance, not independent validation or endorsement.
Frequently Asked Questions
What is How Long It Really Takes?
How Long It Really Takes is interactive browser tool designed to help anyone whose jobs keep taking longer, or sometimes shorter, than they expected, and who would like to see the pattern in their own record. a private record of your guesses about how long jobs will take, and what actually happened. You guess a range and say how sure you are, do the job, and record the minutes before you explain anything. Your guess is locked once it is saved, and the record shows how your results run against your guesses, kind of job by kind of job. It is a working version of Prediction Before Action from The Evidence-Based Life.
What do I receive with How Long It Really Takes?
One self-contained HTML file, a quick start, an evidence record and a checksum manifest. No install, account or subscription.The tool works offline and makes no network requests. The publisher receives no copy of what you enter. Records stay in this browser, but browser storage is not encrypted or protected from other people using the same browser profile.Pay once for this version and reuse the downloaded file indefinitely. Future major versions and continuing support are not included unless they are stated separately.A guess for any ordinary job: a low and a high in minutes, and how sure you are that the result will land inside it.A timer that stores when you started, so it keeps going if you close the page, and a clock that stays hidden unless you ask for it. You can also type the minutes.A guess that is locked once it is saved, so the record shows what you expected and not what you remember expecting.A first card that is a live worked example: guess a small job, time it, and see the two side by side.A record worked out from your own results, kind of job by kind of job, that shows nothing until there is enough to say, and no scores, streaks or targets.Beside your next guess, what jobs of that kind have usually turned into.A comparison of your earlier results and your latest, from ten results, that describes the record and never says better or worse.The words of the practice this comes from, Prediction Before Action in The Evidence-Based Life, quoted in the tool, with a link. You do not need the book.Five short optional lessons in a chat between Heron and EBL, each with Heron's read of your own record.A screen that follows the clock and warms when you record a result, with a control to hold the tone and one to keep it dim.Export and import, so you can back up or move your record whenever you want, and a printable record.Works on one device at a time. Clearing your browser's site data clears it, so export a backup if you want to keep it.
Can I buy or download How Long It Really Takes now?
No. This is a forthcoming preview. Checkout and delivery stay disabled until named human approval and fulfilment checks are recorded.
