It’s been quite rainy here in Massachusetts lately, and thus we’ve been seeing quite a few rainbows. I don’t know how they form, and I really don’t care. They never fail to amaze me. Why? Their color, for one thing. And then there’s their arc-like shape. Rainbows tell us that the storm’s over, and that the sun’s about to come out. Rainbows are like bridges, showing us how to get from one place to another. Can a world with such color–and possibilities–really be all that bad?