I decid­ed I want­ed to do some account­abil­i­ty stud­ies about algo­rithms in our lives. And it’s hard to study the news­feed in a quan­ti­ta­tive way, and I also want­ed some­thing with high­er stakes. So I start­ed with an algo­rithm that is used in the crim­i­nal jus­tice sys­tem to pre­dict whether a per­son is like­ly to com­mit a future crime.