Daily one-pagers about AI, leadership, technology, and being human.

johnmaconline

I'm writing to think, learn, and remember in public. I'll be here everyday.

September 9, 2026 1 minute read

Time Dilation

Time passes differently for me than it does for you.

Physics says so.

It also passes differently for you now than it did when you were younger. Time speeds up as we get older. The seasons come quicker. The vacations are shorter. The numbers go up faster.

The future becomes the near future, or even now. What was possibility becomes reality or never gonna happen. What might be either is or never will be.

The time is yours. What will you do with it?

September 8, 2026 1 minute read

Cutting Off Big Heads

“Wall Street banks are pushing large law firms to cut fees, arguing that the business model that has enriched top lawyers for decades is not sustainable in an era of AI.”

From Marginal Revolution

Even though this makes complete sense, it’s hard to see how this will play out. Big firms are really good at making money and, even more so, protecting that revenue stream.

Yes, AI should knock down the costs. But will it?

Big heads are hard to cut off.

September 7, 2026 1 minute read

Scale of Complexity

“Don’t build a space shuttle to drive down the street to the grocery store.”

AI does the research. It creates the documents. It writes the code. It tests the code.

You’re the overseer with a million ideas. You think they’re good ideas.

We’ve always had to worry about building something too complex, too featureful, and too hyperbolic for the set of requirements. That’s part of the product and engineering tradeoff. And the friction of building has helped keep this problem in check.

Space shuttles, for all of their awesomeness, are terrible grocery-getters.

Requirements still matter. Even if building it is frictionless.

September 6, 2026 1 minute read

Business Loans and Dinner Plans

Remember the annoyance of spam emails? Ah, the good ole days.

Now it’s…

“Hey, remember me? Wanna have dinner again?”

And

“Hello, I’m Jane, your loan officer. You’ve been approved for…”

I’m getting about 15 of these a day in various forms into my text and voicemail. I’m sure you are as well.

Computers made spam almost frictionless and costless, but at least someone had to sit in a chair and do something. AI breaks those chains. A prompt plus a few tokens, and you have an autonomous spamming army.

Thanks, AI.

We’re gonna need some friction.

September 5, 2026 1 minute read

Nothing Coming Out

If you’re stuck and nothing’s coming out.

No big ideas. No curiosity. Nothing you’re working out.

Maybe it’s because nothing interesting is going in.

Keep the inflow interesting and plentiful.

September 4, 2026 2 minute read

Theoretical Versus Empirical

Theoretical means what we expect based on how we think it works. We’ve done analysis and math, and drawn these conclusions through reasoning.

Empirical means what we expect based on what we’ve seen in the real world. We’ve watched and measured, and we’ve drawn these conclusions through observation.

  • Theoretical: “We analyzed it and think this change should make the software faster.”
  • Empirical: “We ran 1,000 tests and measured a 12% improvement.”

For thousands of years, humans worked in both worlds. Sometimes with tension (like in the Physics world) and friendly one-upmanship about which is more important. Both approaches require creativity and a solid knowledge base about the topic.

Now we can add AI in.

For theory, AI helps because it can find patterns that we can’t or haven’t yet and it’s really good at using tools that we’ve provided for it.

For empiricism, AI helps because it can run bajillions of tests and iterations, and it’s really good with massive data sets.

In both, it can connect the dots across its eidetic, almost infinite memory.

But it can’t create. Not the way we do.

Generative is not the same as creative. AI looks creative, but its still just statistical.

Whether we’re talking about theoretical or empirical, AI helps move everything forward, but we, the humans, are still the secret sauce.

September 3, 2026 1 minute read

Should AI Run the Human Resources Department?

AI is already running a lot of HR departments.

HR departments use AI helpers for the following areas:

  • Recruiting — job description creation, candidate screening, etc — 99% of hiring companies surveyed use AI in their hiring process in some way.
  • Performance appraisal and ranking — Half of those surveyed use AI tools for daily performance management, morale gauging, ranking, and feedback generation.
  • Compensation — salaries, benefits, etc — Over 40% of those surveyed use AI tools for compensation and benefits ranking and management.

Some of the reported benefits:

  • Productivity/efficiency of the HR team
  • Navigation of complex systems
  • Compensation equity
  • Bias reduction
  • Cuts costs

That’s good, right?

AI helps all of us knowledge workers. You should be using it (correctly).

HR has “human” in its name. Humans work. Humans lead. Humans decide.

Let’s be sure to keep the humans at the center of the HR department.

September 2, 2026 1 minute read

The Guy In My Machine

Whether ChatGPT, Claude, or whatever AI-assistant you maybe using, do you think of it as an actual person in your computer?

I do. Sort of.

Clearly, there is no little man in my machine. I know this both intellectually and emotionally. However, it helps me to think as if there is.

It helps me in two ways:

  1. The LLM “is like” a human in that it “understands” what I say, and how I say it. It helps me be better at giving specific instructions.
  2. The Agent can control my computer, has access to the internet, and can try things like me. Thinking of it like a person helps me be better at thinking about myriad solutions to the problem rather than just a specific set of instructions for a solution that I’ve devised already.

The guy in my computer is a mental model. Not a real one.

Maybe it’s creepy. Maybe it’s childish. But it certainly helps me.

September 1, 2026 1 minute read

Making your Own Butter

Do you make your own butter?

Of course not. Or, not likely, at least.

Why would you? It takes about 20 minutes of vigorous physical activity. You need heavy cream, and the quality of that cream matters a lot for the final product. Sometimes, it doesn’t actually work. You get to the 15 or 20-minute mark and find it was all for nothing. Gotta start again with new ingredients.

And if it works, does it taste better? Or does it taste better enough that the whole thing was worth it? Was it cheaper? What was the actual advantage?

If you’re at the grocery store (or convenience store, or even many gas stations), you can simply walk to the dairy aisle, and for a few dollars, you can choose any style of butter your heart fancies: salted, no salt, Irish, European, Amish, cheap, less cheap.

Quick, easy, cheap, and you get exactly what you want.

Why would you make your own butter?

Because life requires participation. More participation, more better (and in this case, more butter).

Sometimes you should make your own butter.

August 31, 2026 1 minute read

Real Clickbait

We scoff at obvious clickbait. We’re above it. We’re not susceptible.

Each of us is susceptible. To something.

That’s the real clickbait.

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