Jenny Offill's Dept. of Speculation resembles no book I've read before. If I tell you that it's funny, and moving, and true; that it's as compact and mysterious as a neutron; that it tells a profound story of love and parenthood while invoking (among others) Keats, Kafka, Einstein, Russian cosmonauts, and advice for the housewife of 1896, will you please simply believe me, and read it?