Currency refers to the timeliness of
information. In printed documents, the date of publication is the first
indicator of currency. For some types of information, currency is not an
issue: authorship or place in the historical record is more important
(e.g., T. S. Eliot's essays on tradition in literature). For many other
types of data, however, currency is extremely important, as is the
regularity with which the data is updated. Apply the following criteria to
ascertain currency:
- The document includes the date(s) at which the information was
gathered (e.g., US Census data).
- The document refers to clearly dated information (e.g., "Based on
1990 US Census data.").
- Where there is a need to add data or update it on a constant basis,
the document includes information on the regularity of updates.
- The document includes a publication date or a "last updated" date.
- The document includes a date of copyright.
- If no date is given in an electronic document, you can view the
directory in which it resides and read the date of latest modification.
If you found information using one of the search engines
available on the Internet, such as AltaVista or InfoSeek, a
directory of the Internet such as Yahoo, or any of the services that rate
World Wide Web pages, you need to know:
- How the search engine decides the order in which it returns
information requested. Some Internet search engines "sell" top space to
advertisers who pay them to do so. Read Pay for
Placement? from Searchenginewatch.com.
- That Internet search engines aren't like the databases found in
libraries. Library databases include subject headings, abstracts, and
other evaluative information created by information professionals to
make searching more accurate. In addition, library databases index more
permanent and reliable information.
- How that search engine looks for information, and how often their
information is updated. An excellent source for search engine
information is Search
Engine Showdown, written by Greg R. Notess.
All information, whether in print or by byte, needs to
be evaluated by readers for authority, appropriateness, and other
personal criteria for value. If you find information that is "too
good to be true", it probably is. Never use information that you cannot
verify. Establishing and learning criteria to filter information
you find on the Internet is a good beginning for becoming a critical
consumer of information in all forms. "Cast a cold eye" (as Yeats wrote)
on everything you read. Question it. Look for other sources that can
authenticate or corroborate what you find. Learn to be skeptical and
then learn to trust your instincts.
© 1996 Elizabeth E. Kirk