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Writing for people who want their promises to matter.

The blog explains the model, the behavioral logic behind commitment devices, and why lock in is a voluntary tool for people who want real stakes.

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May 4, 2026 · 4 min read

Behavioral economics reading list

The papers behind lock in's model: present bias, precommitment, costly deadlines, and why the rule has to be set before the excuse arrives.

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From essay to rule

Read the logic. Then set the rule.

Choose the place, define the window, and decide the consequence before the negotiation starts.

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