Until last week, it was just a series of rumblings. The allegations were of horrible episodes, but they simply didn't penetrate the mantle of achievement, riches and accumulated goodwill of the groundbreaking icon. To dwell on the dirt would require you to see a hero as a monster. Now we have to answer hard questions about events, and about ourselves. What will we tolerate when we are in the thrall of genius, and what will we be willing to look away from?