If you accept that society is pyramid-shaped, it’s easy to accept ideas such as a “bottom 80%” (the hideous peasants who do all the jobs you wouldn’t touch) and to imagine oneself as in the “top 20%” if you have a comfortable home, don’t go hungry and have enough to treat yourself to discretionary luxuries like a Netflix subscription. Yes, the private-jet class may be far above you, but your little perch on the side of the pyramid keeps you out of most of the muck.