As Roseanne Roseannadanna used to tell us on “Saturday Night Live,” “It’s always something,” Things haven’t changed, or is that “the more things change, the more they stay the same”? We’re living in an up-and-down world, in a dynamic equilibrium. If it weren’t for the sunrises and sunsets, the phases of the moon and the clock-like rise and fall of the seas two times a day, we would be lost.