@article{recommendationsanduseragencythe,
  title = {Recommendations and User Agency: The Reachability of Collaboratively-Filtered Information},
  author = {Sarah Dean and Sarah Rich and Benjamin Recht},
  year = {2019},
  eprint = {1912.10068},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1912.10068v2},
}