A paper-first reading field guide
Record One Assumption Behind a Model
Use three linked fields: model output, assumption, and failure condition. Keep each field brief and attach the page or chapter landmark that supports it.
Make one load-bearing model assumption visible before accepting the prediction or explanation built from it. A compact three-anchor trail keeps the note useful when you return later or discuss it with someone using another edition.
Step 1
Anchor the location
Record the page or chapter before interpreting the moment. Add the current reading boundary when later knowledge could change the note.
Step 2
Model output
Record the result the model is used to support.
Step 3
Assumption
Find one stated or necessary simplifying assumption.
Step 4
Failure condition
Write the condition under which that assumption would stop being useful.