• Thomas Sowell, Discrimination and Disparities: Revised and Enlarged Edition (New York, NY: Basic Books, 2019), 110-114; (references), 255-257.

IMPLICATIONS

The emphasis on complex statistical analysis in economics and other fields— however valuable, or even vital, such statistical analysis may be in many cases— can lead to overlooking simple but fundamental questions as to whether the numbers on which these complex analyses are based are in fact measuring what they seem to be measuring, or claim to be measuring. “Income” statistics which lump together annual salaries and multi-year capital gains are just one of many sets of statistics which could stand much closer scrutiny at this fundamental level— especially if laws and policies affecting millions of human beings are to be based on statistical conclusions.

What can be disconcerting, if not painful, are the simple and obvious fallacies that can pass muster in intellectual circles when these fallacies seem to advance the prevailing vision of what is called “social justice.” Among prominent current examples is French economist Thomas Piketty’s large international statistical study of income inequality, which was instantly acclaimed in many countries, despite such obvious and fundamental misstatements as one pointed out by Professor Steven Pinker of Harvard:

Thomas Piketty, whose 2014 bestseller Capital in the Twenty-First Century became a talisman in the uproar over inequality, wrote, “The poorer half of the population are as poor today as they were in the past, with barely 5 percent of total wealth in 2010, just as in 1910.” But total wealth today is vastly greater than it was in 1910, so if the poorer half own the same proportion, they are far richer, not “as poor.”⁶⁶

In addition to speaking of percentages as if they represented a given amount of income or wealth over the course of a century, Professor Piketty also made such assertions as that, in income, “the upper decile is truly a world unto itself,”⁶⁷ when in fact just over half of all Americans are in that upper decile at some point in their lives.⁶⁸ When Piketty said that the top one percent sit atop the “hierarchy” and “structure of inequality,”⁶⁹ he again verbally transformed a changing mix of people in particular income brackets into a fixed structure rather than a fluid process, in which most Americans do not remain in the same quintile from one decade to the next.

Such misstatements are different expressions of the same fundamental misconception. As an empirical study of the 400 richest Americans pointed out, Piketty “naively assumes that it’s the same people getting richer.”⁷⁰ But the majority of the 400 richest Americans have earned their fortunes in their own lifetimes, rather than being heirs of the 400 largest fortunes of the past!⁷¹

Such misconceptions are not peculiar to Professor Piketty. Nor are these the only problems with his statistics. But that such simple and obvious misstatements can pass muster in intellectual circles is a problem and a danger that goes far beyond Thomas Piketty.

Whether income differences are measured before taxes or after taxes can change the degree of inequality. If inequalities are measured both after taxes and after government transfers, whether in money or in goods and services, that can reduce the inequality considerably, when high-income people pay higher taxes and low-income people receive most of the government transfers.

Statistics on tax rates themselves can be grossly misleading when changes in tax rates are described in such terms as “a $300 billion increase in taxes” or “a $300 billion decrease in taxes.” In reality, all that the government can do is change the tax rate. How much tax revenue that will produce depends on how people react. There have been times when higher tax rates have produced lower tax revenues, and other times when lower tax rates have produced higher tax revenues,⁷² as well as times when tax rates and tax revenues moved in the same direction.

During the 1920s, for example, the tax rate on the highest income Americans was reduced from 73 percent to 24 percent— and the income tax revenue rose substantially⁷³— especially income tax revenues received from people in the highest income brackets. Under the older and much higher tax rate, vast sums of money from wealthy investors were sheltered in tax-exempt securities, such as municipal bonds. The total amount of money invested in tax-free securities was estimated to be three times the size of the annual budget of the federal government, and more than half as large as the national debt.⁷⁴

Such vast and legally untaxable sums of money caught the attention and aroused the ire of Secretary of the Treasury Andrew Mellon, who declared it “repugnant” in a democracy that there should be “a class in the community which cannot be reached for tax purposes.”⁷⁵ Failing to get Congress to take steps toward ending tax exemptions for incomes from particular securities,⁷⁶ Secretary Mellon sought instead to lower the tax rates to the point where it would in fact lead to collection of more tax revenues.

Tax-exempt securities tend not to pay as high a rate of return on investments as other securities, whose earnings are taxed. It made sense for wealthy investors to accept these lower rates of return from tax-exempt securities when the tax rate was 73 percent, but not after the tax rate was lowered to 24 percent. In terms of words on paper, the official tax rate on the highest incomes was cut from 73 percent to 24 percent in the 1920s. But, in terms of events in the real world, the tax rate actually paid— on staggering sums of money previously untouchable in tax shelters— rose from zero percent to 24 percent. This produced huge increases in tax revenues received from high-income people, both absolutely and as a percentage of all income taxes collected.⁷⁷

This increase in income taxes collected from high-income taxpayers was a result of the plain fact that 24 percent of something is larger than 73 percent of nothing. Tax rate cuts in some later administrations also led to increases in tax revenues!⁷⁸ For example, a front-page news story in the New York Times of July 9, 2006 said: “An unexpectedly steep rise in tax revenues from corporations and the wealthy is driving down the projected budget deficit this year.⁷⁹

However unexpected this increase in tax revenues may have been to the New York Times and others decrying “tax cuts for the rich,” this was precisely the kind of outcome predicted and expected by others in various administrations over the years, who had urged that tax rates be cut, in order to get money disgorged from tax shelters and invested in the market economy. This included people in the Coolidge, Kennedy, Reagan and George W. Bush administrations, where there were similar outcomes.⁸⁰ But the very possibility that tax rates and tax revenues can move in opposite directions is seldom mentioned in the media— a crucial error of omission.

These are not simply arguments about history. Among the consequences in our own time is that proposals to reduce income tax rates are automatically met with objections to reducing income tax revenues. In the Wall Street Journal of January 31, 2018, for example, economist Alan Blinder objected to tax rate cuts on grounds that “the deficit is already too large!”⁸¹

This is in defiance of what the New York Times reported about the unexpected reduction of the deficit by increased tax revenues during the administration of President George W. Bush. It is also in defiance of a record-breaking budget surplus after tax rates were reduced in the 1920s— a surplus large enough to allow about one-fourth of the national debt to be paid off.⁸² Like many others, Professor Blinder proceeded as if it were axiomatic that tax rate reductions mean tax revenue reductions.

There is, of course, no guarantee of what any given tax rate reduction will lead to in a given set of circumstances. But Professor Blinder’s assertion was not based on any argument that a tax rate reduction under particular current circumstances would lead to a reduction in tax revenues. There was in fact no argument whatever on that point, nor apparently any sense of need to make such an argument. Similarly, a twenty-first century book on President Calvin Coolidge likewise asserted that, as a result of the tax rate cuts during his administration, “the bounty that the rich enjoyed sapped the U.S. Treasury of funds it might have used for other ends.”⁸³ Thus a record-breaking budget surplus under President Coolidge was verbally transmuted into a deprivation of funds, with the turn of a phrase.

All the voluminous and detailed statistics on tax rates and tax revenues published by the Internal Revenue Service, going back more than a hundred years, might as well not exist, as far as many of those with the prevailing social vision are concerned. This is ultimately not a question about history, but about what such heedlessness implies for the present and still more so for the future.