01
Decision
Type 1 vs Type 2 Decisions
Reversibility of Decisions.
The article
If
The brain instinctively treats all failures as threats to survival, demanding excessive caution for reversible decisions (Two-way doors). This causes "Analysis Paralysis."
Then
“If a decision is easily reversible (two-way door), ship within 24 hours to gain data. Only spend days/weeks on "one-way doors" (e.g., core database schema, security protocols).”
Unless
The "One-Way Door" Filter
Source
Jeff Bezos, 2015 Letter to Shareholders (Amazon.com, Inc., filed April 2016) — the letter that introduced the "Type 1 / Type 2 decisions" framing. The 1997 letter is the "Day 1" letter and does not contain it.
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