There are many potential sources of error as people process information. One may
have difficulty selecting and understanding competing information or one may have to
integrate information from several sources to recognize a pattern for an event that is start-
ing to occur. One must also remember what information means. An example is what to do
in an emergency when there is an audio alarm. When the same alarm signals fire and
tornado, the wrong action could be fatal. The correct action for fire is to get out, whereas
the correct action for a tornado is to stay inside and take cover. Another processing error
is difficulty solving a problem, such as diagnosing what is wrong with a machine. One
may not have the experience (previous information) to make correct decisions or judge-
ments that are safe.