Unformatted text preview: are bound to discover
otherwise when they need to locate the information, for example, during a
test. It is not easy to retrieve information from a database that is, in a sense, in
the gas phase. Students who have blackouts during tests should reexamine
their study habits. cen54261_ch07.qxd 11/18/03 9:57 AM Page 291 291
CHAPTER 7 A library with a good shelving and indexing system can be viewed as a lowentropy library because of the high level of organization. Likewise, a library
with a poor shelving and indexing system can be viewed as a high-entropy
library because of the high level of disorganization. A library with no indexing system is like no library, since a book is of no value if it cannot be found.
Consider two identical buildings, each containing one million books. In the
first building, the books are piled on top of each other, whereas in the second
building they are highly organized, shelved, and indexed for easy reference.
There is no doubt about which building a student will prefer to go to for
checking out a certain book. Yet, some m...
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