Tiny Experiments

The problem it solves

Most business advice starts with setting a clear goal. That works when the path is known and the measures can be set in advance. It works badly when you are testing a new offer, entering a market or working out what you want from the next few years. Then the goal is a guess dressed up as a plan, and missing it feels like failure instead of information.

Anne-Laure Le Cunff, a neuroscientist who runs the Ness Labs newsletter, tells how she left a dream job at Google, founded a startup that shut down and then lost direction. Her way out was a pact to write and share 100 articles in 100 workdays, which grew into the newsletter. The book distils that way of working into a method.

What changes in how you work

You stop asking whether a plan is right and start asking what the cheapest way to find out would be. A pact has a fixed format, I will [action] for [duration], and it focuses on outputs you control, such as publishing 25 newsletters in 25 weeks, rather than outcomes such as 5,000 subscribers. You judge it with a yes or no question: did you do it?

Le Cunff also gives practical rules. Pick the smallest version you can do on your worst day, run it for about ten days if it is new, a month if you have tried it before and three months if you want to do more of something that is already in your life, and watch out for the urge to choose the biggest version. For a business, a pricing test, an outreach channel or a content series becomes a short trial with a start, an end and a review. You also get less precious about decisions, because nobody has to win the argument in advance.

When to read it, and when not to

Read it when you are unsure of the direction, when planning has become a way of avoiding action, or when targets have worn you out. It is written about life and work in general, not as a business manual, and many of its examples are creators, coders and career changers, so you have to translate them.

A pact measures output, and the book is clear that it is not a performance metric. For a business you still need outcome numbers somewhere, and if you want statistical rigour in your tests, you will need a more technical book as well. It is a warm, readable book rather than a rigorous one.

How it connects to running and growing a business

A pact is a decision with an end date. You can log the hypothesis, the action, the duration and what you decided at the end, persist, pause or pivot, with the reason. That gives you a record of decisions and why you made them, instead of a memory that edits itself. Plus Minus Next gives you a weekly review that feeds the same record.

Once an experiment works, the repeated action is ready to become a playbook. The book notes that a pact can turn into a habit when it becomes part of daily life. In a company, a test that proves itself becomes a standard process, written down and then handed to people or software.

Le Cunff argues that fixed long-term goals suit a stable world better than the one most of us live in. Her alternative is the tiny experiment: a small commitment to try something for a limited time and see what happens, with a review at the end. The book is written about personal and professional growth, and it carries over to business. It is organised in four parts, Pact, Act, React and Impact, with a toolkit and a reflection guide at the end. It was published in 2025.

Introduction: Goodbye, Linear Life

She starts with her own story. After a blood clot and a flat answer to a simple question about how life was, she resigned from Google at 27, then founded a tech startup that failed to advance in an accelerator and shut down. Admitting she was lost turned out to be liberating, and curiosity brought her back to the brain. She asked what experiment she could run on her own life, and made a pact to write and share 100 articles in 100 workdays. A path emerged, and Ness Labs grew into a newsletter and small business.

Why Goal Setting Is Broken

Amelia Earhart's career is the opening example: she tried many things, and her famous flight did not even land where she meant to. Children experiment, while adults learn to perform and to want a legible story. Linear goals, such as SMART goals, were built for controlled settings with predictable outcomes. She proposes three shifts: from the automatic anxiety of Response 1 to the curious Response 2, from ladders to growth loops, and from outcomes to process.

Escaping the Tyranny of Purpose

The pressure to find one grand purpose is its own trap. We carry cognitive scripts, internal patterns about how a life or career should go, and they quietly limit what we try. She names scripts such as the crowdpleaser, the epic and the sequel, and proposes taking field notes on your own life, a kind of self-anthropology, to notice what energises you and what you do on autopilot.

A Pact to Turn Doubts into Experiments

This is the core chapter. A pact is a pledge to do something for a set time, in the form I will [action] for [duration]. She contrasts SMART with PACT: Purposeful, Actionable, Continuous and Trackable. Repeated trials matter because one try tells you little. Short pacts work best, and she distinguishes a pact from a habit, a New Year's resolution, a performance metric and a resource-intensive project. To choose one, find the smallest version you can run, and resist the maximalist brain that wants the biggest one.

A Deeper Sense of Time

She contrasts Chronos, time as quantity measured by clocks and calendars, with Kairos, time as quality of experience. Efficiency is not the point; the aim is to open magic windows, periods of deep absorption. A Kairos ritual is a small, repeatable act, such as walking in a slow circle or making tea, that helps you ground yourself before work.

Procrastination Is Not the Enemy

We treat procrastination as a character flaw, but it carries a message, and the guilt we add on top makes it worse. The Triple Check asks three questions about a task you are avoiding, from the head, the heart and the hand: is it rational, does it feel right and is it practical? The answer often shows that a task needs to be dropped or rethought, not forced.

The Power of Intentional Imperfection

You cannot excel at everything at once. Intentional imperfection means choosing where to be temporarily mediocre, so you can do well where it counts. She did this during her doctorate, turning down extra teaching so she could finish her studies and her pact to work on the book. She offers a tool called the Ambition Dials for putting this into practice.

Creating Growth Loops

Metacognition, curiosity about your own thinking, turns action into learning. Her tool is Plus Minus Next: draw three columns for what worked, what did not and what to do next, and fill them in regularly. Making good mistakes means looking at errors to see what they teach, instead of hiding them.

The Secret to Better Decisions

At the end of a pact you have data, and you decide whether to persist, pause or pivot. Culture pushes you to raise the stakes, so a successful month turns into a plan for something far bigger, and she tells you to notice that impulse and consider simply staying the course. The Steering Sheet widens the decision frame by pulling together internal and external signals, which a list of pros and cons does not.

How to Dance with Disruption

Disruption shakes you before it asks anything of you. Her Two-Step Reset is to process the subjective experience first, with curiosity about your emotions, and only then deal with the objective problem, an order she finds in Stoicism and in therapy.

Impact: Grow with the World

The last three chapters turn outward. In "How to Unlock Social Flow", she describes communities as a source of safety and pooled knowledge, and a Curiosity Circle as a group built on shared curiosity instead of expertise. Learning in Public covers radical transparency, sharing your process and mistakes so that others can help, with the example of a kombucha maker who sold to friends before wholesalers. Life Beyond Legacy argues that chasing a legacy keeps a scorecard, and proposes generativity: creating value now, with the Five Keys, the first of which is to do the work before waiting for permission.

Conclusion and Toolkit

The conclusion says you are the lead scientist of your life and that success is a lifelong experiment. The toolkit sorts the tools under four questions: where can I start, how can I maintain momentum, what can I do next and who can I keep growing with. A bonus resource on mind gardening is offered separately.

What to do with it

• Write one pact in the form I will [action] for [duration], small enough to do on your worst day.
• Choose the length: about ten days for something new, a month for something you have tried and three months for something you want to do more often.
• Do a weekly Plus Minus Next: three columns for what worked, what did not and what you will do next.
• At the end of the pact decide to persist, pause or pivot, and write down why.
• Apply the same format to one business question, such as an outreach channel or a pricing page, instead of setting a fixed target.