Abdulsamet Tahtacı

Founder of Addiem · Decision quality

About

Founder of Addiem. Interested in forecasting, decision quality, calibration, and the gap between what we believed before an outcome and what we remember afterward.

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Addiem

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Gone streaking

Maker History

AddiemA private decision journal before hindsight rewrites it
Sep 2026

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Joined Product HuntNovember 1st, 2024

Forums

p/addiem

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10h ago

What do you write down before a decision—not after?

I keep noticing the same thing in my own work: once the result arrives, my memory becomes a better lawyer than historian.

I'm trying a simple rule: before an important decision, write down the probability, the reason that could be wrong, and the date you'll look again.

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23h ago

Addiem - A private decision journal before hindsight rewrites it

After an outcome arrives, memory can make the original decision sound cleaner than it was. Addiem is a private, local-first decision journal that freezes the before: probability, rationale, success criterion, failure condition, and review date. Later, inspect process quality separately from outcome quality. No account or subscription; desktop-first and one-time. For founders, forecasters, investors, researchers, and operators who make decisions with delayed feedback.