Point-counterpoint: would doubling the human life span be a net positive or negative for us either as individuals or as a society?

@article{Stock2004PointcounterpointWD,
  title={Point-counterpoint: would doubling the human life span be a net positive or negative for us either as individuals or as a society?},
  author={Gregory B Stock and Daniel Callahan},
  journal={The journals of gerontology. Series A, Biological sciences and medical sciences},
  year={2004},
  volume={59 6},
  pages={B554-9}
}