Information Architecture

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Navigation fits nicely into the human thought process. Many people have trouble figuring out which keywords to type in to a search engine because the likelihood calculations they must perform prior to executing the search are abstract and require a thorough understanding of the domain and the language in which they are searching. But everyone can navigate through well-known spaces to find the information they

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Metadata is information about information. All items of information have metadata. For example:

Emails have a sender, a subject, a received date, a cc list, a return path, content type, etc.
Source code modules have a name, and an evolution history which itself contains fields like author, date, version number, branching identifiers, etc.
Files in a Windows file system have a name, size, created date, modified date, various title, subject, author, and keyword attributes that I never use, an access control list, and

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