This is my first time reading Tiptree and she is extraordinary. I can't believe I've been missing out for so long! There's a range of stories here, and they are heartbreaking and horrifying and excellent. I think the one that's had the biggest effect on me is "The Screwfly Solution", which is flat-out terrifying, but "Your Faces, O My Sisters! Your Faces Filled of Light!", "The Last Flight of Dr. Ain", and "Houston, Houston, Do You Read?" were also standouts. A lot of what Tiptree writes is focused on gender, on the terrible expectations and limitations placed on women (no surprise that she used a male pseudonym back in the day) and she never pulls a punch, while simultaneously not wallowing in violence for the sake of it. I can't honestly claim that her stories are particularly subtle in what they have to say, but they're characterised by a thoughtfulness and intelligence that gives them a quiet depth that I really appreciate. I understand now why she's foundational reading within the genre.