Doesn't the Robert Frost poem this article takes its title from make pretty much the exact opposite point?<p><i>We have to use a spell to make them balance:<p>'Stay where you are until our backs are turned!'</i><p>...<p><i>It comes to little more:<p>There where it is we do not need the wall [...]</i><p>...<p><i>[...] Before I built a wall I'd ask to know<p>What I was walling in or walling out,<p>And to whom I was like to give offence.</i>