Pensaduras

When the machine asks who you are, what do you answer?

por Roberto Santacroce Martins

Latest writings

Burning Time Instead of Tokens

Working with a model on a large, badly architected codebase, the bottleneck isn’t generation, it’s evaluating output against a subjective yardstick that lives only in one person’s head. On specification as the source of truth, code as a build artifact, why SOLID and hexagonal gain a new reason to exist, and the Joel Test revisited for the model era.

Putting Syncthing in my pocket: building an open-source iOS app with Claude

The story of SuperSynch, an open-source iOS app that embeds Syncthing’s Go engine so the iPhone is a real device on the Syncthing network, not a remote control. Built in two days with Claude, including the pivot that saved the project, the embedding quirks that took real debugging, and why it’s all MPL-2.0 like Syncthing itself.

Why We're Adding Graphify to Our Claude Code Workflow

Every fresh Claude Code session re-reads the codebase before it can help with anything real, and on a project of any size that quietly costs time and money. Graphify builds the map once, saves it, and hands it to Claude on the next session. A short walkthrough of what it is, how to set it up, and why it actually helps.

The Farmer Who Tried to Time the Market

A viral 1875 chart by an Ohio farmer claims to have called every market crash. Tested against real returns since 1928, the timing story falls apart. What survives is a boring old signal: price.

The Witness Paradox: Why a Solved Problem Still Needs a Mind

If a machine solved every open problem in a sealed box with no one there to read the results, would anything actually be solved? Part 2 of a reflection that starts with Fermat’s Last Theorem and ends on why understanding must land in a mind.

A Diary of Virtues

Franklin listed thirteen virtues in his twenties and spent a lifetime marking his own faults in a little book. I took the idea, but with seven virtues of my own and a Telegram agent instead of paper. On humility, listening, and why the paper notebook lasts three days.

I Have No Bitcoin

A small poem and a shorter confession. I have no Bitcoin. Whatever I once had was sold to pay the bills, and I never bought any. I never fell into the maxi religion, and I am quietly proud of that.