They do have value, and since their meaning is not changed as part of this work, they are not addressed here but are covered in the OID material.

Every article about XML namespaces has to point out that the URI goes nowhere, meaning there is no need to fetch any material that the URI appears to identify.

The study's strength is that participants were tested on their ability to recall material both in and out of context, meaning general ideas were included rather than facts alone.