Human beings can be remarkably dense. The practice of bloodletting, as a medical treatment, persisted despite centuries of abundant evidence that it did more harm than good.
The practice of communism, or political bloodletting as it should perhaps be known, whose centenary in the Bolshevik revolution is reached this year, likewise needs no more tests. It does more harm than good every time. Nationalised, planned, one-party rule benefits nobody, let alone the poor.
