Growing up in the Virginia suburbs, Mark Oliver Everett was to roam unsupervised with his sister, Liz, while his mother combated depression and his father, the eccentric and acclaimed quantum physicist Hugh Everett, remained distant and obsessed by parallel universes of his own creation. (Everett writes, "As a little kid, I had a hard time with the realization that inanimate objects didn't have feelings or thoughts. I remember being on the verge of...