The decision log is the only honest content moat

Every other content moat can be copied.

Niche down? Someone niches further. Build an audience? Audiences move. Rank for keywords? The algorithm eats you. Write fast? Someone writes faster.

The decision log can't be copied because no one else made your decisions.

I keep one for every project I work on. Each entry is a single decision: what was the question, what did I choose, what did I rule out, why. Some are five lines. Some are five paragraphs. The point isn't length. The point is that future-me can read past-me's reasoning and not have to relitigate the call.

Here is what I've learned about it.

It hurts to keep at first. You don't want to write down a decision that might turn out to be wrong. That's the whole reason to write it down. The version of you who refuses to put a stake in the ground is the version of you who keeps making the same mistake.

It changes how you decide. You stop making lazy calls because you can hear future-you reading them. You start steel-manning the alternatives because you'll have to defend not picking them.

It accumulates as a body of work no one else has. Most of what I write publicly comes out of the log. The notes are downstream of the discipline. The discipline doesn't exist without the log.

Most operators don't keep one. They tell themselves they remember. They don't. They reconstruct the past from outcomes, which is the same as fabricating it.

If you only do one operating practice this year, do this. It costs nothing. It compounds for as long as you're working. It makes you better at the only thing that matters, which is judgment.

A decision log is the cheapest moat in the world. It's also the rarest, because it requires the one thing nobody wants to do: putting the call in writing before you know how it turns out.

That's the part that scares people off. That's also the part that compounds.