on called <tt>middle</tt> that takes a list and
returns a new list that contains all but the first and last
elements.</em></font></div><br />
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<h2><font color="black"><a name="htoc113">8.14</a>&nbsp;&nbsp;Debugging</font></h2>
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<font color="black">Careless use of lists (and other mutable objects)
can lead to long hours of debugging. Here are some common
pitfalls and ways to avoid them:
</font><ol type="1"><li><font color="black">Don't forget that most list meth