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David Holt

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David Holt · AI Solutions Engineer

AI is the craft. Understanding is the pursuit.

Software, systems, incentives, behavior, work, life — nothing is safe from unnecessary analysis.

A place to think in public.

I work with AI and software, but this isn't an AI blog.

It's a collection of things I find worth thinking about. Technology, work, incentives, systems, and the strange ways they interact. Sometimes practical. Sometimes philosophical. Occasionally useful.

Mostly, I'm trying to understand things well enough to have something worth saying about them.

Latest posts…

September 25, 2026 · 3 min read

Embrace the Reality Monster

The problem with both sides of the passion debate

Follow your passion or be realistic and chase the money. Both are wrong, for the same reason: neither one is actually about reality. They're feelings dressed up as strategy.

The truth: people pay for value. Not for how much you love something. For what it does for them. If your passion doesn't make someone else's life better, the market doesn't care how obsessed you are.

But skip the obsession and chase the money instead, and you hit a different wall. Faked motivation runs out. Most worthwhile outcomes take years, and you can't fake obsession for years. The people who outlast everyone else aren't the ones who wanted the payout most, they're the ones who couldn't have stopped if they tried.

The laws that don't move

Some constraints don't move. What the market values, what compounds, what people actually pay for, these are closer to physics than opinion. Fight them and you just burn energy against something that was never going to bend. Find the overlap, where what you're obsessed with meets what people will actually pay for.

The part of reality that looks like defiance

Some of the most successful people got there by believing something that wasn't true yet. Not confidence, near delusion. That irrational belief is what let them survive the years the market said stop. They kept failing and adjusting and never quit, not because the data told them to keep going, but because they'd already decided they would.

It looks like defiance, but it's actually the opposite. Persistence and self-belief are part of reality too. Most people quit right before the inflection point, and the ones who don't disproportionately win. So irrational self-belief isn't fighting reality, it's using one of its real mechanisms: conviction changes what you'll attempt, and attempts compound.

Why the cold rational model is wrong

Understanding reality isn't about becoming a cold calculator who only does the provably smart thing. That leaves out one of reality's real forces: belief is causal. It changes what you try, what you endure, what you become capable of.

The people who look most realistic, grinding, persisting, believing something the data hasn't caught up to, often understand reality best. They've just sorted which laws are immovable and which only look that way until someone refuses to accept it.

That sorting is the actual skill. Not passive acceptance, but learning reality's shape, obeying what doesn't move, and bending what does by sheer will.

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September 23, 2026 · 3 min read

Humanity Is Plagued By The Open Loop

We're obsessed with closing loops. Say goodbye before someone dies. Get the last word in an argument. Finish the project instead of shelving it. Get an answer, any answer, instead of sitting with "I don't know."

Here's the uncomfortable part: a lot of the time, the other side of that loop doesn't even know it's open. If someone dies before you get to say goodbye, they don't experience an incomplete goodbye. There's no ledger on their end waiting to be balanced. The open loop was always yours. You weren't closing something for them. You were closing something in your own head.

An open loop is really just an unanswered question about your own footing — did I handle that, is this going to come back on me. Not-knowing feels like exposure. Closing the loop, even badly, turns an unknown into a known. That's why you re-send an email you already sent, or over-explain a decision that was already fine — nothing about the outcome changes, but the exposure does.

Here's the trap: your brain can't tell the difference between a loop that's resolved and one that's resolved well. It only tracks open versus closed. A trivial unanswered text costs the same anxious energy as a genuinely important unfinished project, because to your nervous system, both just register as "open." Your task list works the same way. Half of what's on it isn't urgent, it's just open — and open is uncomfortable enough that you'll work on the wrong thing just to make a loop disappear.

So the fix isn't "finish more things." It's closing loops on purpose, cheaply, when the work wouldn't have mattered anyway:

  • Write the "no" down. A task you've quietly already decided not to do stays open forever if you never officially closed it. Cross it off. A decided "no" is an ending, same as a finished "yes" — and if it was actually important, it'll raise its head again on its own. You don't need to keep it open just in case; the ones that matter come back without your help.
  • Separate the list from the priority. Write down everything, then star the few that actually matter. That's it. The starred items get your attention. Everything else can sit on the list unstarred and stop competing for the same anxiety.
  • Notice the loops that were never yours to close. Some open loops are you chasing someone else's reaction or peace of mind. You don't control that ending. Naming it as not yours is sometimes the only close available.

Not every open loop deserves to be closed well. Some just need an ending, any ending, so your head can stop paying rent on something that was never going to pay you back.

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September 21, 2026 · 3 min read

Everyone Now Faces Warren Buffett's Problem

Warren Buffett has more capital than he can easily put to work.

That sounds like a great problem to have. But with that much capital, most opportunities aren't worth pursuing. Small investments barely matter to Berkshire Hathaway, and there are only so many places where billions of dollars can produce an attractive return.

So Buffett passes on almost everything.

AI is creating a strangely similar problem for the rest of us.

Until recently, most ideas came with a natural filter. You might have an idea for an app, but you couldn't code. You might want to analyze a pile of data, automate part of your job, make a video, or build some little tool for yourself.

Eventually you ran into something you couldn't do, couldn't afford, or didn't have time to learn.

A lot of those barriers are disappearing.

I notice it constantly now. I'll have an idea and realize I could probably have a working version by tonight.

The problem is that I have more of those ideas than I have nights.

When the cost of trying something drops far enough, saying yes gets very easy. You can start another project before you've decided whether the project deserves to exist. Do that enough and you can spend a lot of time proving that you could do things without producing much that compounds.

Buffett has dealt with his version of this problem for decades. One of the ways he describes his boundaries is the "circle of competence."

There are businesses he understands deeply enough to make a judgment about, and there are businesses he doesn't. If something falls outside the area where he believes he has the understanding required to make a good decision, he can pass.

He has also talked about having a "too hard" pile.

AI is making that pile smaller for everyone.

You can enter an unfamiliar field and get oriented in minutes. You can write code in a language you've never used, work through financial statements, research an industry, or prototype something without spending months acquiring the underlying skills first.

That's enormously useful. It also makes it easy to confuse access with judgment.

AI can get me surprisingly far into a field I know almost nothing about. What it can't give me instantly are the thousands of little corrections that come from having actually done the work. I don't recognize the edge cases immediately. I don't have years of mistakes sitting in the back of my head telling me when something looks technically correct but feels wrong.

In the areas where I do have those reps, AI is completely different. I can move much faster because I know what I'm looking at. I can reject bad output quickly. I can ask better questions.

That makes the circle of competence more important as AI gets better.

There are going to be more things we can do than things worth spending our time on.

Buffett has capital.

We have hours.

Spend accordingly.

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September 16, 2026 · 1 min read

Worry Actually Does Matter

We tell people not to worry like it's helpful advice. "Don't worry about it, worrying won't change anything." It sounds wise. It's usually wrong.

Worry is basically a brainstorming session of ways to reduce risk. When you worry about something, you're running scenarios, checking exposure, looking for a way in. Tell someone to stop worrying and you're telling them to stop looking.

The mistake is bailing out too early. Most people worry on the surface for a minute, hit "there's nothing I can do," and stop — so of course it feels useless. But that first "nothing I can do" is rarely the real answer. Dig a couple layers past it and there's almost always a lever: something you can prep for, ask about, hedge against, or just control the framing of. The worry wasn't pointless. You just quit the brainstorm before it produced anything.

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