In particular, if one person is trying to teach another they should provide an informative sample, rather than a random one. So if a learner knows that they are being taught, they can assume that the sample is informative.

As a reminder, the JSON Schema is not the source of truth for the Specification. In cases of conflicts between the Specification itself and the JSON Schema, the Specification wins. Also, some Specification constraints cannot be represented with the JSON Schema so it's highly recommended to employ other methods to ensure compliance.

. When the pandemic hit, rates of insomnia spiked around the world, driven by everything from the stress of living during an international public health crisis to the changes in daily life wrought by lockdowns

Roles are element types and authors MUST NOT change role values over time or with user actions. Authors wishing to change a role MUST do so by deleting the associated element and its children and replacing it with a new element with the appropriate role.

Central Idea

The previous edition of the Publication Manual strongly discouraged the use of the term subjects (except for nonhumans) and strongly encouraged the use of participants instead. T