A Decision Log Beats Another Build-in-Public Thread

Build-in-public shows the work. A decision log explains it.

Posting product updates can be useful. It creates accountability, attracts people who care about the journey and gives a founder a reason to keep shipping.

But a public feed is a terrible memory system.

Six months later, you may remember that you killed a feature without remembering why. A customer asks for it again, the old context is gone, and suddenly you are rebuilding the same experiment.

A decision log prevents that.

It is short, dated and intentionally boring. Its job is to preserve the reasoning that would otherwise disappear.

Activity is not history

A build-in-public thread tells people what happened.

It rarely captures the constraint behind the decision.

Maybe you rejected a feature because it took ten hours a week to support. Maybe a pricing change was delayed because two contracts were still being negotiated. Maybe an integration was rejected because the provider's API was unreliable.

Those details matter later.

Founders also have a habit of rewriting old decisions in their heads. The story becomes cleaner than reality.

Write down the messy version while it is still fresh.

Keep the template tiny

You do not need a strategy document.

Four lines are enough:

1. What did we decide?
2. What alternatives did we consider?
3. What constraint mattered most?
4. What would make us reconsider?

Good entries might cover pricing, integrations, product scope, support workflows or technology choices.

Do not log every commit.

Log choices that are expensive to reverse or easy to forget.

If there is no condition that would make you reconsider, you may not have a decision yet. You may simply have a preference.

Keep the log closer than the feed

The log can be public, but it does not need to be.

A private file in the repository or a simple note is enough.

Public entries can be useful when customers or future teammates benefit from understanding why the product is narrow. Private notes are better when the decision contains customer names, legal details or an unreleased price.

Do not delay recording the decision because you are trying to turn it into a good social post.

The feed can disappear. Your record should not depend on a social platform.

Use the log when an old idea comes back

The decision log earns its keep when a familiar request returns.

A customer asks for the analytics screen you removed. Search the log.

You may find that three customers tried it, nobody reused it and it consumed hours of maintenance.

That does not automatically mean the old decision is still correct. It means you have a starting point. You now know what evidence would need to change.

The same works for pricing, partnerships and hiring.

A narrow product can look arbitrary from the outside. A good decision record shows which alternatives were tested and why they were rejected.

Spend twelve minutes a week

Before closing the laptop on Friday:

• scan tickets, calls and invoices
• identify decisions that would be expensive to reverse
• write one entry if needed
• add the condition that would reopen it

If nothing important happened, write that down too.

Once a quarter, read the recent entries together. Patterns become visible. Maybe you keep accepting integrations and postponing retention work. Maybe you keep discounting whenever a large prospect asks.

The log makes those patterns harder to ignore.

What this is not

A decision log is not a changelog.

A changelog tells customers what they can do now.

It is not a diary either. The goal is not to document how difficult the week felt.

The useful information is the decision, the constraint and the trigger for revisiting it.

If an entry takes twenty minutes to write, the template is too complicated.

Start with your last three arguments

You do not need to reconstruct the entire company history.

Write down the last three product arguments you had with yourself.

Maybe one was about price, one about scope and one about a customer request.

Add a date and a reopening condition.

Now you have something that can prevent future work from becoming accidental repetition.

Build-in-public can keep you shipping in front of other people.

The decision log does something different: it keeps you from forgetting why the product became small enough to survive.

Practical playbook

For A Decision Log Beats Another Build-in-Public Thread, turn the main idea into a small operating decision. Identify the customer or user, the problem being solved, the signal that proves progress, and the next action that can be tested.

Decision map

problem → evidence → smallest action → result → next decision

Checklist

• Define the problem in one sentence.
• Use evidence instead of assumptions where possible.
• Start with a small test.
• Measure the result.
• Document what changed and why.

Editorial note

This practical section turns the article central idea into something a founder can test, measure, and revisit. It is deliberately separate from the main argument so readers can distinguish the article analysis from the implementation checklist.