Keep a useful observation
A useful observation begins with a small question. Decide which result would help answer it before choosing what to collect.
The complete index
Notes
Readings on observing a small task, keeping its limits visible and leaving a useful result.
Begin with any of these seven notes. The section list and neighbouring readings offer a route back when a question changes.
Draw the boundary before collecting detail
A clear boundary makes a note smaller and more trustworthy. It tells a reader which conclusion the evidence can support.
Compare two attempts fairly
Two numbers become a useful comparison only when their conditions are known. The differences around the numbers can matter more than their size.
Use a checklist for the parts worth remembering
A short checklist can protect an easily missed step. It works best when each item points to an observable result and a meaningful decision.
Finish a small piece of work
An action finishing is useful evidence. The result that another person will use deserves its own check and a short route back.
Revise a note without losing its context
A living note should become clearer as evidence changes. Preserve the reason for a decision without keeping every intermediate draft in the reader's path.
Read a reference note with a question in hand
A reference page is easier to use when you know which decision it should help you make. Reading can be a small, directed part of the work.