GUIDANCE      Once upon a time an experienced race car driver and pilot told me that the key to navigating on black ice was to keep going fast, never reduce speed or hit the brakes no matter what. (This same person told me that, if you wanted to win unwinnable lawsuits, you had to be totally snarly all the time to everyone so no one took exception to your impossible attitude in jury trials before oppositional judges.) I sure did not have the nerve to contemplate driving that way! We are looking...