As word spread last year that 23andMe was about to go bankrupt, many of their millions of customers wondered if they should delete their data. Social and conventional media were quick to offer advice, sometimes coming from experts in genetics and genomics–my field, I should note–on how to go onto the 23andMe website and delete all of your data.In March of this year, the California attorney general issued a warning that 23andMe was “in financial distress,” and he told Californians that they ought...