It is so easy to be wrong – and to persist in being wrong – when the costs of being wrong are paid by others.
DBx: Indisputably true, both as a matter of logic and as a proposition that consistently succeeds at explaining a great deal of human history.
Note that Sowell’s point is general. Those who are convinced that today’s government-engineered lock-down of much economic activity is appropriate can nod their heads approvingly at the thought that those who are convinced of the opposite fail to account adequately for the costs that would be paid by others were this lock-down less draconian. Ditto the other way ’round: those opposed to this lock-down nod their heads approvingly at what they take to be Sowell’s explanation of why government officials seem now to be so glibly and irresponsibly imposing massive economic costs on hundreds of millions of strangers.
But whatever your position on the lock-down – whether you think it to be worth its gargantuan costs or not worth these costs – you cannot fail to recognize the deep dangers that lurk within any system that allows a handful of people to act in ways that impose massive costs on others.
My own sense is that the benefits of this lock-down are not worth their costs. (And, by the way, I do not reckon as costs only – or even chiefly – financial flows, such as lost profits, and the monetary values of foregone goods and services. Among the many kinds of costs of this lock-down are worse-than-otherwise health in the future, and the innumerable problems inevitably to be created by governments with yet more discretionary powers.) Yet even if I am mistaken – and perhaps I am (I say sincerely) – we should all be deeply suspicious of discretionary power exercised by government officials – power the costs of the exercise of which are borne almost wholly by third parties.
The grade-school fiction – one embraced also by many PhD-sporting intellectuals – is that majority-rule democracy is sufficient to ensure that all decisions made by government officials in democratic nations are without any such negative externalities, that is, without any undue ill-consequences imposed on third-parties. “We the people” make these decisions ourselves through our elected representatives and the assistants that they hire to help them. Problem avoided!
Anyone who believes in this above account of democracy is too naive for words. He or she is wholly ignorant of even the most basic principles of public-choice economics  – an ignorance, note, that itself imposes negative consequences on third-parties by encouraging the naive to impose the costs of political superstitions and of the resulting dangerous policy-making regimes on their fellow citizens. Such people should read Buchanan , Tullock , Downs , Olson , Schumpeter , Arrow , Stigler , Wagner , Niskanen , Higgs , Holcombe , Yandle , Brennan & Lomasky , Caplan , Lee , Simmons , Munger , and Achen & Bartels , among others. Oh, and do read also Sowell’s own great magnum opus .