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Books / Evidence
Technical evidence is published in English.
F51 Labs · Marco Barreto · compiled 2026-10-03
Evidence file for the published works of F51 Labs / Marco Barreto: two books, one essay and one paper. Every field was read from a real file on disk or from a public page fetched on 2026-10-03. Nothing is inferred, estimated or invented; anything that could not be confirmed is listed under missing[] instead of being presented as verified. This file is the index across publications — the paper's full evidence (claims, sources, limitations) lives in content/evidence/darwin-x.json and is not duplicated here.
Talking to the Future · download pdf Talking to the Future · download epub The Singularity Horizon · store The American Table · github The American Table · read The American Table · read pt Refuse, Don't Report: Three Integrity Gates for Self-Modifying ML Systems · doi Refuse, Don't Report: Three Integrity Gates for Self-Modifying ML Systems · record Refuse, Don't Report: Three Integrity Gates for Self-Modifying ML Systems · download pdf Refuse, Don't Report: Three Integrity Gates for Self-Modifying ML Systems · github
A practical guide for adults 50+ who want to use AI with confidence, in their own words. Covers asking well, everyday life (health, money, creativity, family), safety and scams, and using AI to write a memoir and the family archive. Includes 50 ready-to-use prompts, a 30-day plan and a plain-language glossary. The cover image is AI-generated and is disclosed as such in the book's metadata notes.
Final edition (v3 FINAL: PDF 150 pages + EPUB + cover) distributed free on f51labs.com. Store submission through Draft2Digital was not done yet as of 2026-10-03 — the book's own READ-ME lists the D2D account, the tax form and the payment method as still missing.
A Brazilian engineer in Montreal builds an intelligence and must decide what it is — tool, son, or monster. Told across a decade of ordinary life: school runs, hospital nights, a barbecue, a funeral, a marriage holding itself together. The English edition has 34 chapters and 50,181 words (counted 2026-10-03 over the master EPUB: whitespace-separated tokens with at least one letter or digit); the Portuguese original exists chapter by chapter in the working tree.
English edition released through Draft2Digital. The Portuguese edition is the author's original text and is not published.
An essay on US tariffs, debt and the dollar, built on a falsifiable hypothesis: American external policy is the partial execution of a published strategy (Miran, November 2024) that carries a contradiction known since 1960. It sets two constraints — the savings-investment identity and the debt-dynamics equation — then scores seven predictions against August 2026 data: two confirmed, one partial, four failing. Conclusion: the coercive instruments work, the economic ones do not, and a state in that position increases the dose of what it can command.
Published 2026-08-22 as a LinkedIn Pulse article and as a public static site on GitHub Pages; the repository is public and was last updated 2026-08-22.
Instrumented ML systems notice anomalies but emit output anyway: guardrails invalidate an A/B test after the fact, provenance tools compare hashes only afterwards, vector stores reindex after an encoder swap. The paper proposes three gates that decline to emit instead — a memory component that rejects snapshots with digest mismatches or differing key-encoders, a transplant ledger that turns down weight records without a provenance certificate or measured drift, and an ablation harness that produces no artifact when its arms diverge. Motivated by eight experiments across two days on a 1.7B-parameter model that reported success through checks that could not fail; the gates are then exercised (certified self-reassembly at 0.0 logit error over 219 tensors; a cross-lineage FFN graft that fails to beat a norm-matched noise arm, 11.2166 vs 11.2163), and the failures are attributed to addressability, not mechanism.
Zenodo preprint, version 2, published 2026-07-31, open access under CC BY 4.0. The concept DOI 10.5281/zenodo.21726133 always resolves to the latest version.
pdf · 150 pages · 656,016 bytes · SHA-256 6AE7E36E…
epub · 120,097 bytes
cover · 124,288 bytes
cover-small · 40,232 bytes
epub · 34 chapters · 752,084 bytes
master EPUB on the Desktop; the English edition is sold through Draft2Digital, so no free download link exists on the site · local source (The_Singularity_Horizon_EN.epub); not published
manuscript · 308,080 bytes
complete English manuscript on disk (the READ-ME rounds it to 301 KB) · local source (MANUSCRIPT_COMPLETE_EN.md); not published
manuscript · 34 files
Portuguese original, 34 chapters as separate files (00_prologo to 33_epilogo) · local source (local file); not published
cover · 145,543 bytes
cover-small · 45,969 bytes
html · 45,781 bytes
English version, self-contained page · local source (index.html); not published
html · 46,975 bytes
Portuguese version · local source (pt.html); not published
html · 38,989 bytes
article variant used for the LinkedIn post · local source (article.html); not published
pdf · 10 pages · 267,953 bytes · SHA-256 3819550C…
downloaded from Zenodo on 2026-10-03; both hashes match the values recorded on the Zenodo record and in content/evidence/darwin-x.json
record
DOI landing page, version 2; concept DOI 10.5281/zenodo.21726133