So Americans have no idea how much the Masters of the Universe are paid, a finding very much in line with evidence that Americans vastly underestimate the concentration of wealth at the top.

Is this just a reflection of the innumeracy of hoi polloi? No — the supposedly well informed often seem comparably out of touch. Until the Occupy movement turned the “1 percent” into a catchphrase, it was all too common to hear prominent pundits and politicians speak about inequality as if it were mainly about college graduates versus the less educated, or the top fifth of the population versus the bottom 80 percent.

And even the 1 percent is too broad a category; the really big gains have gone to an even tinier elite. For example, recent estimates indicate not only that the wealth of the top percent has surged relative to everyone else — rising from 25 percent of total wealth in 1973 to 40 percent now — but that the great bulk of that rise has taken place among the top 0.1 percent, the richest one-thousandth of Americans.

So how can people be unaware of this development, or at least unaware of its scale? The main answer, I’d suggest, is that the truly rich are so removed from ordinary people’s lives that we never see what they have. We may notice, and feel aggrieved about, college kids driving luxury cars; but we don’t see private equity managers commuting by helicopter to their immense mansions in the Hamptons. The commanding heights of our economy are invisible because they’re lost in the clouds.

The exceptions are celebrities, who live their lives in public. And defenses of extreme inequality almost always invoke the examples of movie and sports stars. But celebrities make up only a tiny fraction of the wealthy, and even the biggest stars earn far less than the financial barons who really dominate the upper strata. For example, according to Forbes, Robert Downey Jr. is the highest-paid actor in America, making $75 million last year. According to the same publication, in 2013 the top 25 hedge fund managers took home, on average, almost a billion dollars each.