--- title: "Calibration techniques for founders | Confidence as a report | Len P. van der Hof" description: "Founder calibration is a set of small writing practices: a three-line bet, a base rate before the story, a disconfirm line, a journal before irreversible calls, and a process-versus-outcome review." image: "https://lenvanderhof.com/media/generated/blog-hero-calibration-techniques-v1.6708614cc975.wide.webp" --- [Founder Performance](https://lenvanderhof.com/en/blog/category/founder-performance/) Research guide # Calibration techniques for founders: five practices that fit a week You do not need a nine-skill curriculum to stop treating a loud sentence as a probability. Len P. van der HofPublished 13 September 20266 min read Write the number before the rain. Then look at the gauge. Direct answer Calibration techniques for founders are writing habits that force confidence to meet evidence. The meaning of calibration on this site is matching the strength of a judgment to the strength of the evidence, then updating when the facts move. This page is not the nine-skill CALIBRATE expansion. It is five practices you can run this week: write the bet, put the base rate before the story, write what would move you, journal irreversible calls before you act, and separate process from outcome when you review. A loud claim with a thin source is a calibration failure, not conviction. The Calibrated Mind is live in English and Dutch paperback and hardcover. The five practices are already usable. ## Key takeaways - Calibration here is judgment under uncertainty, not camera profiles and not a personality test. - Five practices: the bet, the base rate, the move line, the five-line journal, process versus outcome. - Write the number before the room talks. A number written after the discussion is a vote, not a forecast. - Bucket comparable calls by confidence and compare them with outcomes. A small sample is a prompt to inspect, not a score. - This page does not teach the nine-skill CALIBRATE expansion. The book owns that longer practice. - If you cannot write what would change your mind, you do not have a position. You have a mood. [What calibration means](https://lenvanderhof.com/en/blog/what-calibration-means/) is the dictionary entry: match the strength of a judgment to the strength of the evidence, then update when the facts move. Founders ask for techniques because the definition does not tell them what to write on Monday. This page is five practices. It is not the nine-skill expansion in [The Calibrated Mind](https://lenvanderhof.com/books/the-calibrated-mind/). That book is live in English and Dutch as paperback and hardcover. You do not need it to start the report. ## 1. Write the bet Three lines, before you argue. 1. The claim, in a sentence a stranger could score. 2. The evidence, named. A file, a number with a date, a conversation you can point at. 3. A percentage you would actually bet. If line two is empty, line one is a mood. If you would not bet the number in line three, it is decoration. Confidence is a report. The feeling of being sure arrives whether the source exists or not. The bet makes the gap visible. Use it on a hire, a forecast, a “this vendor is safe,” a model answer you are about to paste into a customer thread. Line one does most of the work. “The launch goes well” cannot be scored, so it cannot be wrong, so it will never teach you anything. “We have ten paying accounts by 31 October” can be scored by a stranger with a calendar. Write claims that can lose. ## 2. Put the base rate before the story The story is cheap. A vivid customer, a competitor anecdote, a clean paragraph from a model. Start with the reference class. Of projects like this, how often did the launch slip a quarter? How often did an inbound-only pipeline miss the first ten customers? How often did this kind of hire miss the six-month target? Use the closest defensible reference class you have: your own comparable cases first, then a transparent external base rate if its definitions match. If neither exists, write “no usable base rate” rather than invent one. If you cannot name the class, you are already inside the story. The technique is order. Base rate first. Story second. Update the percentage. Do not start at 90 because the narrative was tidy. ## 3. Write the move line Before the result lands, write one sentence: which obtainable evidence would materially move the number, by how much, and what would retire the claim. If that sentence is blank, you have no update rule. You will defend the feeling when the facts move. The live [CALIBRATE](https://lenvanderhof.com/glossary/calibrate/) capsule is blunt: if nobody can say what evidence would retire the judgment, you do not have a position. The move line has to name evidence you can actually get, and get soon. “If the market turns out to be smaller than we think” is not a move line. “If the next four discovery calls all name a different buyer than the one in our deck” is. Cheap and dated beats decisive and hypothetical. Keep the move line next to the bet. When the evidence arrives, change the number in public, in the same note. Updating is the practice. Being right on the first draft is not. ## Walk one: the senior hire Put practices one to three together on a familiar call. The numbers below are invented for the walk. Yours are the only ones that count. **Claim.** “This senior seller clears quota by month six.” **Evidence, named.** Two reference calls, both arranged by the candidate, both with the same former manager. One deal you actually read the notes on. No data from a segment that looks like yours. **Number.** You write 75, because the interview was excellent. **Base rate, before the story.** Of the last four senior sellers you hired, one cleared quota by month six, one left at month five, and two are still ramping past month nine. That is a thin internal reference class, not a transferable benchmark. It still shows that 75 is being driven by one excellent interview, not by your operating record. **Revised number.** 40. That is a judgmental update, not a formula derived from four hires. Its job is to expose how much work the interview was doing. **Move line.** “A recorded call with a prospect in our segment, run by the candidate, moves me 20 points. If they cannot name our buyer’s budget owner by week three, the claim retires and the ramp plan changes, starting with who they are actually being pointed at.” Notice what changed. The hire may still be right. What changed is that you now own a number you can be wrong about in public, a piece of evidence you can go get this week, and a date on which the claim dies. Before the walk, you had an excellent interview and a feeling. ## 4. Journal the irreversible call before you act [The five-line decision journal](https://lenvanderhof.com/en/blog/five-line-decision-journal/) is already on this site. Write it before Type-3 calls: the ones you cannot cheaply undo. Decision and what it forecloses. What you believed. What you feared. Then leave “what happened” and “next time” blank until review. An entry after the outcome is a memoir. An entry before it is calibration data. Do not restage the whole resilience chapter here. Use the journal when the bet is not enough because the act will close a door. ## 5. Score process, not the win After the result, two columns. **Process.** Did you write the bet? Did you name a base rate? Did you have a move line? Did you journal if the call was irreversible? **Outcome.** Did the claim resolve as written? A good process can lose. A lucky outcome can hide a mood. Mixing the columns is how founders learn the wrong lesson from a loud quarter. The journal does not guarantee a better decision. It stops hindsight from inventing the one you wish you had made. Once you have ten scored bets at roughly the same confidence, do the arithmetic. For ten calls written at 70, seven hits is the expectation, not a pass mark. Ten hits or four is a reason to inspect the number, not proof that you were underconfident or overconfident. Look for the pattern across more comparable calls. Two honest limits. Ten calls is a direction, not a verdict; the noise at that sample is large. And the buckets only mean something if you wrote the number before the result, which is the whole reason practice one comes first. This is your own arithmetic on your own calls. It is not a score anyone can sell you. ## A week, not a personality Pick three live claims across shipping, hiring, or spending. Run the bet and the move line on all three. Use the journal on the one you cannot undo. Review Friday against the gauge, not the vibe. One extra move if you decide with other people. Before the discussion, everyone writes their number silently and turns it over. Then compare. A shared 80 after the discussion hides who moved toward the first speaker. The spread recorded before the talking preserves that information. [Evaluate the reasoning, not the fluency](https://lenvanderhof.com/en/blog/evaluate-reasoning-not-fluency/) is the adjacent test when the sentence came from a model. Fluency is a rendering choice. Calibration is whether you were entitled to believe it. If you wanted a camera profile, a reliability diagram, or a psychometric kit, this is the wrong page. If you wanted a report you can update, start the five practices. The hardcover can wait. The blank line two cannot. ## Terminology - [CALIBRATE](https://lenvanderhof.com/glossary/calibrate/) ## Sources 1. [What calibration means](https://lenvanderhof.com/en/blog/what-calibration-means/) 2. [CALIBRATE (glossary)](https://lenvanderhof.com/glossary/calibrate/) 3. [The Calibrated Mind](https://lenvanderhof.com/books/the-calibrated-mind/) 4. [Five-line decision journal](https://lenvanderhof.com/en/blog/five-line-decision-journal/) 5. [Evaluate the reasoning, not the fluency](https://lenvanderhof.com/en/blog/evaluate-reasoning-not-fluency/) ## Further reading - [What calibration means](https://lenvanderhof.com/en/blog/what-calibration-means/) - [CALIBRATE](https://lenvanderhof.com/glossary/calibrate/) - [The Calibrated Mind](https://lenvanderhof.com/books/the-calibrated-mind/) - [Five-line decision journal](https://lenvanderhof.com/en/blog/five-line-decision-journal/) About the author ## [Len P. van der Hof](https://lenvanderhof.com/en/authors/len-p-van-der-hof/) Entrepreneur, AI Innovator and Venture Builder Len P. van der Hof builds practical AI systems, digital ventures and evidence-informed tools for founders. ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Person", "@id": "https://lenvanderhof.com/#person", "name": "Len P. van der Hof", "alternateName": [ "Len van der Hof", "L.P. van der Hof", "Leendert Pieter van der Hof" ], "honorificSuffix": "MSc", "url": "https://lenvanderhof.com/", 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