So now we know. The boom in private equity, which was promoted as the superior business model, based on patient capital, superior management and an alignment of interests, was nothing more than a trick of financial engineering – and a clumsy one at that. The magic of leverage works both ways, as we are discovering.

Henry Kravis of Kohlberg Kravis Roberts is asking his investors to be patient after a bout of negative returns and writedowns, echoing the cries of Alan Bond and other entrepreneurs of earlier credit cycles. Hamilton James, Blackstone’s president, said at the Super Returns private equity conference on February 26: “We’re a proxy for the credit markets.” David Rubenstein, co-founder of Carlyle Group, recently asked whether “modest return” was a more apt name for private equity. He thinks it’s funny. It’s not.