I suppose I like certainty as much as anyone else, but I also feel that the hidden costs are high, that we pay a heavy price for our convictions. This is a human issue as well as a writing issue - at least in the personal essay as I practice it. Any real essayist knows that certainty is an editorial decision, arrived at not through conviction but through suppression, the denial of a whole range of possibilities, of alternatives that we jettison, sometimes necessarily, in order to steady the ship.