A massive rain across Southern California taught me a hard life lesson. I had worked on our badly designed church roof for the last twenty years, patching and repairing, then re-roofing the entire flat roof section of the building. Then more patching and repairing. Then more after that. And more after that. Then finally in early January, I concluded I had finally conquered the perennial roof leaks. Yea! My diligence and painstaking care had paid off. Then came the trilogy of rainstorms that drenched us for a week. To my astonishment, grief, and indignation, the roof leaked more than it…