Retired computer science professor argues that decisions are being made by “algorithms that are mathematically incapable of bias.” What does this mean?

This came up in the comments, but not everyone reads the comments, so … Joseph recommended an op-ed entitled “We must stop militant liberals from politicizing artificial intelligence; ‘Debiasing’ algorithms actually means adding bias,” by retired computer science professor Pedro Domingos. The article begins: What do you do if decisions that used to …