First Principles

We write down everything you believe about your growth. Then we check.

Tell us the growth problem you think you have. We will tell you whether it is the right one, before you pay us anything.

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Belief LedgerIllustrative · seed-stage fintech
Example Belief Ledger
BeliefLoadEvidence
Users sign up because transfers are cheaper than the bank.HighContradicted
Our most valuable users are small business owners.HighAssumed
Churn is driven by pricing.HighNever tested
Users who invite a contact in week one stay longer.MediumProven
Agents are a channel, not a support cost.MediumAssumed

This is what every engagement produces. The example is made up; a real one has your beliefs in it.

01The problem

Growth plans rest on beliefs

Every growth plan rests on things a team believes about its users, its market, and its product. Most of those beliefs have never been checked.

What a growth plan is standing on
THIS YEAR'S GROWTH PLAN ✕ Contradicted ○ Assumed – Never tested ● Proven ○ Assumed HIGHHIGHHIGH MEDIUMMEDIUM
Scroll to see all five →

Width is how much of the plan rests on the belief. Fill is what evidence supports it. The three widest columns here are holding up most of the year, and none of them has been checked.

Checking a load-bearing belief is expensive, and the answer can undo a year of work. Checking a small one is cheap and safe. So teams check the small ones, and the beliefs carrying real weight stay untouched for years.

Here is what that looks like in practice. A team decides users are churning on price, so they discount. If people are really leaving because the product never became useful to them, the discount changes nothing. It just loses money more slowly. The work was done well. The belief underneath it was wrong.

That is the gap we work in.

02What we believe

Five positions, so you can argue with us

Every firm has beliefs about its own work. Most keep them vague enough to be safe. Here are ours.

01

Most growth failures are diagnosis failures

The tactic is rarely the problem. The belief underneath it usually is.

02

The heaviest beliefs get checked the least

Small questions are cheap to answer, so those are the ones that get answered.

03

Research should name a decision

If a study cannot change what you do next, we would rather not run it.

04

A claim you cannot check is not a claim

We write down a prediction and a date, then come back and score it.

05

Who you ask decides what you learn

A sample that was never going to disagree with you cannot teach you much.

And one we are unsure about

Whether a firm can stay this strict about evidence once it has payroll to meet. We think so. We have not tested it.

03Method

How an engagement runs

Six stages. Three to four weeks for the full version, shorter for the smaller pieces.

01 — Beliefs

We talk to you and your team, separately

One at a time, never as a workshop. What we are listening for is where two people who work together answer the same question differently. That does not come out in a group.

02 — Evidence

We look at what sits behind each one

Analytics, cancellation reasons, support tickets, sales calls, reviews. Every belief gets a status. Most come back Assumed. A few turn out to be contradicted by data you already have.

03 — Constraint

We name the one thing holding growth back

The biggest leak is not always the constraint. Fixing acquisition while activation is broken pours more people into the same hole. We name one, and show you what we ruled out and why.

04 — Users

We speak to eight to twelve real users

Yours when the question is about behaviour you can already see. Ours when it is about people you cannot reach.

05 — Fix

We design the fix and say what it should do

One intervention, the experiments that test it, and a written claim: this metric, this much, by this date. We also write down what we would believe instead if it fails. Your team ships it. We stay in the room while they do.

06 — Score

We come back and score the prediction

Six to eight weeks later. Right, partly right, or wrong. We record it either way.

Whatever comes out of stage six changes the beliefs at stage one. A diagnosis is only a hypothesis until something has been tried against it.

04What we do

Services

Four separate pieces of work. Start with whichever one answers the question you actually have.

One week

Belief Ledger Sprint

We interview you and your team, check what evidence sits behind each belief, and hand you the Ledger. The cheapest way to see the picture before committing to more.

Two weeks

Research Sprint

One question, answered properly. Will this segment pay for this? Why are these users leaving? Does this positioning land in this market?

Three to four weeks

Growth Audit

The full method, end to end: beliefs, evidence, the constraint, user research, a designed intervention, a written prediction, and a scheduled check.

Six to twelve weeks

Experiment Programme

We design the tests, your team runs them, and we review as results come in. It ends when the constraint lifts, or when the diagnosis is disproved.

We do not run campaigns, buy media, or manage marketing operations. We design experiments and review them. Your team ships them.

Start a conversation →
05Research

We publish what we find

Original studies on how products grow, and research on growth as a field.

Alongside those: Belief Ledgers of companies we do not work for, and the outcome of every prediction we make, including the ones we get wrong.

First pieces shortly.

The scoreboard

Every prediction, and whether it held

Each engagement ends with a written prediction. At six to eight weeks we score it, and the result goes here whether it flatters us or not.

No predictions scored yet. The firm is new.
This fills in from the first engagement onward.

Publishing these is uncomfortable. It is also the only way to show whether the method works.

06Products

We build products that help companies reach their growth goals

The first one exists because our own research needed something that was not there.

Product 01

The participant pool

Research is only as good as who you talk to. Most founders interview their own community and their existing customers, then generalise from a sample that was never going to disagree with them.

We are building a profiled pool of participants in segments the existing panels handle badly. Real users in emerging markets, verified by what they have actually done rather than what they say.

Join the pool →

More will follow. We will announce them when they exist.

07About

First Principles

A growth strategy and research firm. Based in Abuja, working with seed to Series A companies globally.

The name is the method. We try not to inherit assumptions, including our clients'.

AbujaBased here. Working globally.
Seed – Series AWhere the questions are still open.
2026Founded. New, and saying so.

Who you would be working with

PORTRAIT
200 × 250

A real photograph.
Not a logo. Not an illustration.

Adeen

Founder & Principal

You would be working with me directly. Every interview, every ledger, and every prediction on this site is mine, and the firm is small enough that it will stay that way for a while.

08Contact

Start a conversation

Tell us the growth problem you think you have. We will tell you whether it is the right one.

A few sentences is plenty. What you have tried, and what you expected to happen.

We read every one and reply ourselves. Usually within two working days.

You can also email adeen@firstprinciples.works, or find us at @1stprinciples_ on X.