Perpetual motion and Racism

There are many parallels between perpetual motion machines and the more extreme racist thinkers.
 * {|class="wikitable" style="background:lavender;color:black"

! Category || Parents' socioeconomic class || Cognitive class
 * + Percentage in Poverty
 * Very high/Very bright || 3 || 2
 * High/Bright || 3 || 3
 * Average || 7 || 6
 * Low/Dull || 12 || 16
 * Very low/Very dull || 24 || 30
 * Overall average|| 7 || 7
 * }
 * Low/Dull || 12 || 16
 * Very low/Very dull || 24 || 30
 * Overall average|| 7 || 7
 * }
 * Overall average|| 7 || 7
 * }