Prediction & Evidence Ledger

Write down what you expect to happen, and when, before you look, then log what actually happened next to it, so you can tell whose explanation was right instead of arguing from memory.

You are three months into a new pricing page. Traffic is up 8 percent and the team is celebrating. Someone says the new headline did it. Someone else says it was the spring push from the podcast. A third person remembers predicting exactly this in February, though nobody can find the message. Everyone is confident, nobody is wrong, and next quarter you will run the same argument again with new numbers and the same missing receipts.

The Prediction and Evidence Ledger is a dated running record of what you expected before you looked, and what actually showed up. The cue is any moment when two or more explanations both fit the result and memory is your only referee. Write down the rival explanations by name, with a date. Under each one, write the number or outcome you expect to see if it is true, and what would count as it being wrong. When results land, log them next to the predictions, note where reality drifted from your guess, and record what you now believe more or less. What changes is visible: the confident retelling stops, because the file says who called it and who did not, and you start trusting your own read of the next launch. Skip the ledger for one-way, low-stakes calls you will never revisit.