Take the rule about crowds. If Adams was at a party with friends, he'd open his mouth to talk, only to find the words tumbling out in a raspy, imperceptible staccato, chopping off sentences before they had a chance to form. If he tried to say, "Tomorrow is my birthday," for example, it would morph into a weak "Ma robf sss ma birfday." But if he was on the lecture circuit, delivering a prepared speech to a crowd of thousands, he could stand behind the podium and—"Hello!"—his voice would whir back to life, if only for the hour he was onstage.
Read the rest of the Wired article here. It is a fascinating account of illness and recovery.