“Put your trust in God but keep your powder dry.”
Oliver Cromwell, 1650, to the soldiers of the New Model Army as they prepared to forge an Irish river and head into battle.
Cromwell was a dour, humorless (or “humourless”) religious fanatic charged with squashing every Catholic and every independent thought in the British Isles because, well, that’s what God demanded. Famine, plague, deportations, mass death and deportations followed.
But even Cromwell knew that the key to victory was Continue reading

As I noted in my publishers letter this month, this article, originally published in May, contained a substantial and utterly boneheaded mathematical error. After we published it, two things happened: first, readers took the article seriously enough to find the error and report it; second, our colleague Charles, substantially revised the method for calculating the maximum drawdown for funds in my portfolio which haven’t been around for a full market cycle. Because those changes were material, we decided to re-present this article as a public service.
focus on investment rather than management.