@misc{indiciae2233be1d6f11,
  title = {Thoughts on progress.},
  author = {P B Medawar},
  year = {1976},
  doi = {10.1080/21548331.1976.11707015},
  url = {https://pubmed.ncbi.nlm.nih.gov/1026604/},
  note = {Source identifier: 1026604}
}