annotation-problems.md

Nick Stenning's Hilbert Problems of Annotation

My summary of Nick Stenning's slides about open problems on the Web for annotation at iannotate.

• bi-directional links: need to be able to discover when resources are annotated
• annotation of documents, not formats: an annotation of a document in html should apply to the pdf, epub, etc
• annotating dynamic content: content changes on the Web, and annotations need to be able to survive that (Memento, InternetArchive could help here)
• persistent reference: for annotation Cool URIs is not enough. The Web isn't cool enough.

Don't forget:

• bidirectional targeting of annotations (two bodies which link to one another generally link from one point/section of the source to one point/section of the target)
• handling dynamic and layered annotation: notes change, or can apply to other notes