I'm in the middle of rereading Vonda's science fiction. I started before Sasquan because it seemed an appropriate way to celebrate her being a Guest of Honor. It's going slowly because I am much distracted, but I'm keeping at it. I think endurance is a good word to describe her writing. Vonda describes herself as a failed scientist but her SF is very well informed and somehow it has avoided obsolescence even after four decades of major scientific progress. How she did it, I don't know, but it's quite an accomplishment. I think the essence of the feminist SF movement is a more perceptive and realistic portrayal of human behavior. (Of course other SF has dealt with strong political and social themes, but feminist SF took it to another level. Including the other half of the population helped.) Vonda's early SF has a core of clear-eyed toughness that is holding up very well.