&gt; have little faith in people&#x27;s capabilities.<p><pre><code>  2.2% of the US population has an IQ below 70.
  8.9% of the US population has an IQ below 80.
</code></pre>
Not all of these people are capable of being even minimally productive, but some are on the line where they are productive but only in a limited fashion.  IQ is of course not the only limitation, intelligent people also often have issues.