This is a very important sense; consider its relation to memory and how
your decisions and judgments are based upon things you have heard or
thought you heard.
Psychological tests have revealed the fact that the ear of the
average person is mistaken thirty-four per cent of the time. Think
of it--one-third of your ear impressions are mistaken. The resulting
memory, judgment and action must suffer. This is true largely because
of lack of a conscious effort to develop this important sense.