“Short stories have to accomplish a nearly impossible magic trick: to introduce a world often much stranger than our own and make you care about it in a matter of pages,” writes R. F. Kuang in her introduction. “The most important part of this magic trick is just a willingness to get weird.” The stories in The Best American Science Fiction and Fantasy 2023 are brimming with bizarre and otherworldly premises. Women can’t lie or fall in love. Fathers feed their children ghost preserves. Souls chase one another through animal incarnations. Yet these stories are grounded deeply in our...