C-TPO

Same ideas, different readers Β· Part 4, for my kids

Dad's job: the squeaky bike version

AI score 1.8/5 me. Idea 1.3/2 Β· Direction 0.3/1 Β· Words 0.2/2. The ideas are mine. AI found the story and drew it. My pass is next
A note for grown-ups

A verdict is decided once, on day one, with the least information. A path keeps moving. The first look is the quick lookups. The note on the handlebar is a receipt: who decided, and when to check again. The rain is a claim that expires, so the bike comes back for a first look on its own. Asking Dad is "ask first," fixing it is "act," and the test ride is "proven fixed": done means evidence, not "I think so."

A kid rides a bike past the house and the brakes go SQUEEEAK, while Dad covers his ears SQUEEEAK!
The bike brakes squeak. Loud. Is the bike broken? Is it fine? Don't decide forever. Follow the path.
Watch it first: one squeak, one path, one test ride.

A verdict is when you decide once and never look again. A path is when you keep checking as things change. Here's the bike's path.

  1. Step 1, first look: a kid wipes dirt off the brake with a rag 1 JUST DIRTY?
    First look. Is it just dirty? Wipe the brakes. A little squeak, but the bike stops fine.
  2. Step 2: a note taped to the handlebar says OK for riding to school, check again if it rains 2 OK for ridingto school.you, MondayCheck if it rains!
    Park it, with a note. "OK for riding to school. Checked by you, Monday. Check again if it rains."
  3. Step 3: rain pours on the bike and the note gets crossed out: it ran out 3 OK for riding… RAN OUT!
    It rains. The note said "check again if it rains." So the note just ran out. Back to a first look.
  4. Step 4: the squeak is louder and the bike is slow to stop, so the kid asks Dad 4 Dad? It's worse.
    Look again, then ask. Now it squeaks louder and stops slower. That's not just dirt. Ask Dad.
  5. Step 5: Dad and the kid fix the brake together with a wrench and new brake pads 5 NEW PADS FIX IT TOGETHER
    Fix it. The brake pads are worn out. Dad shows you how to put new ones on.
  6. Step 6: a test ride, the bike stops fast with no squeak, and a big green check mark 6 NO SQUEAK!
    Test ride. It stops fast, no squeak. Now it's fixed. You know because you tried it.
The bike's path as a loop: first look, note, rain, look again, fix, test ride, fixed. If the test ride fails, back to fix. FIRST LOOK NOTE FIX TEST RIDE FIXED it rains: look againstill squeaks: fix again The bike's path, with two loops
Two loops make it a path. When the note runs out, look again. When the test ride fails, fix again.

Not a verdict, a path. Fixed means test ride, not "I think so." That's Dad's job, but for computers in big companies.

Quick question: why not just say "the bike's fine" on Monday and forget about it?

Tap to see

Because things change. The rain changed it. A note that says "check again if it rains" tells you when to look again, so you find out before the brakes stop working on a hill. Grown-ups forget this one too.

🚲 Print the squeaky bike and stick it on the fridge (or the garage door).

Too easy? Read the grown-up version.

For people short on time

TL;DR

Matt thinks out loud here about technology, mostly how teams decide what to build, fix and protect.

The first series argues that security gets better fastest when the teams that each hold part of the answer share it earlier. Part 2 says most critical findings aren't: seven questions tell you which, and the answers live with other teams. Clay first, chisel later is about roughing out the whole thing before polishing the parts.

Every piece says how much AI helped, and the site is built in the open: a roadmap with a big picture (only Now is a promise), a changelog with a monthly review, and the product work itself, like Operatie Klompje, a postcard-sized product for one customer: his mom.

There's also an Arts and crafts wall, because not everything has to be serious. The discussion happens on LinkedIn.

Start with Part 1 β†’
AI score 2.7/5 me. Idea 1.8/2 Β· Direction 0.4/1 Β· Words 0.5/2. AI drafted these from the site

Updated October 18, 2026. A TL;DR for the whole site, by reader, is an idea by Matt at ctpo.io. Copy it freely, just link back.

Streng geheimOperatie Klompje

Postcard front: Mama in a lace cap, apron and clogs, proud of little Machoo.
The customer: my mom. Small, even in clogs. Giant courage, and giant worry. Most of what she knows about my work comes from the news.