"Franz said 'Your picture, Viki, suggests that sense of breaking-up we feel in the modern world. Families, nations, classes, other loyalty groups falling apart. Things changing before you get to know them. Death on the installment plan – or decay by jumps. Instantaneous birth. Something out of nothing. Reality replacing science fiction so fast that you can't tell which is which. Constant sense of deja-vu - 'I was here before, but when, how?' Even the possibility that there's no real continuity between events, just inexplicable gaps. And of course every gap – every crack – means a new perching place for horror."
— Fritz Leiber