failsafe jQuery code
<p>Can anyone explain what the jquery documentation is exactly referring to with this statement: "the argument to write failsafe jQuery code using the $ alias, without relying on the global alias"  when referring to using the following:</p>

<pre><code>    jQuery(function($) {
});
</code></pre>

<p>I have been using jquery for a while now so understand what this code is doing to a certain extent but the phrase used in the documentation about writing failsafe jquery code puzzles me and i am unsure whether it is important or not.</p>
