How not to Kill People with Spreadsheets (2020)

Summarizes how the UK government’s disastrous coronavirus error: 15,841 people with coronavirus infections went unreported to Serco Test and Trace, the company running the U.K. government’s coronavirus tracing program, in the week from Sept. 25 to Oct. 2, with 48,000 of their possible contacts not warned—because of errors in a data import. Read more here