&gt; They seem to all equate intelligence and processing speed.<p>It&#x27;s helpful to remind people that every human brain that exists runs at the <i>same</i> processing speed†, yet we have greatly varying intelligence between us. (Also, IQ is an index, but people confuse it for a linear measure; human geniuses may be doing things that require <i>many times</i> the &quot;intelligence&quot; of the average person.)<p>† Okay, I lied: there are some people whose neurons have abnormal firing rates; the visible result is Parkinsonism.