Errors we found in our own record, written up in full — what broke, what it cost us, and the checks that catch it. Every one of these made our numbers look better than they were.
Found in public data • Corrected, not quietly restated • The fix is in the write-up
FIELD NOTE · 2026-08-04CORRECTIONThis site has one load-bearing claim: every pick is written down before the market opens. On seven occasions our scheduler drifted past the bell and logged anyway — and we didn't notice for six weeks. An outside reader found it in our public CSV. What broke, what it did to the numbers, why we won't claim it flattered us, and the hard gate that makes it impossible now.
FIELD NOTE · 2026-07-29BUGHistorical prices are silently rewritten every time a company splits. Mix a price you stored with one you download later and you invent returns that never happened — and in cheap stocks the error is always in your favour. We found it in our own code, where it had been inflating our numbers for weeks. How it works, why it survives review, and the six checks that catch it.
Every trading record you have ever been shown was produced by software, and software has bugs. The question is never whether a record contains errors — it is whether anyone would ever tell you.
A track record that has never published a correction is not a careful record. It's an unaudited one. So when we find something, it gets written up properly: the mechanism, the numbers before and after, and enough detail that you could find the same bug in your own work.
Both notes here were errors in our favour. That is not a coincidence — errors that make your numbers worse get found immediately, and errors that flatter you can sit there for months. It is exactly why the raw data is public and why we would rather a reader find the next one than nobody find it at all.
The verdicts themselves live under Experiments, and every correction is recorded in the audit log. The raw data is on the track record page — picks.csv and outcomes.csv.
A verdict lands every few weeks. We'll email you each one, free, the day it publishes — and nothing else. No signals, no picks, no offers. Verdicts stay free and public for everyone either way; this just means you don't have to remember to check back.
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