Turn second intent para into note, reinforce/mention loophole

Addresses #3045 more directly

understanding/22/target-size-minimum.html

@@ -40,7 +40,7 @@ <h2>Intent of Target Size (Minimum)</h2>
 
         <p>The intent of this Success Criterion is to help ensure targets can be easily activated without accidentally activating an adjacent target. When targets are small, it is difficult for users with hand tremors and those who have difficulty with fine motor movement to activate them accurately when there are other targets that are too close. Providing sufficient size, or sufficient spacing between targets, will reduce the likelihood of accidentally activating the wrong control.</p>
 
-        <p>This Success Criterion defines a <em>minimum size</em> and, if this can't be met, a <em>minimum spacing</em>; using larger sizes will help many people use targets more easily. Meeting <a href="../21/target-size-enhanced.html">2.5.5 Target Size (Enhanced)</a> is recommended whenever possible.</p>
+        <p class="note">This Success Criterion defines a <em>minimum size</em> and, if this can't be met, a <em>minimum spacing</em>. It is still possible to have very small, and difficult to activate, targets and meet the requirements of this Success Criterion, provided that the targets don't have any adjacent targets that are too close. However, using larger target sizes will help many people use targets more easily. <em>As a best practice</em> it is recommended to at least meet the <em>minimum size</em> requirement of the Success Criterion, regardless of spacing. For important links/controls, consider aiming for the stricter <a href="../21/target-size-enhanced.html">2.5.5 Target Size (Enhanced)</a>.</p>
 
         <section id="exceptions">
             <h3>Exceptions</h3>