In early May, a press release from Harrisburg University claimed that two professors and a graduate student had developed a facial-recognition program that could predict whether someone would be a criminal. The release said the paper would be published in a collection by Springer Nature, a big academic publisher.

With “80 percent accuracy and with no racial bias,” the paper, A Deep Neural Network Model to Predict Criminality Using Image Processing, claimed its algorithm could predict “if someone is a criminal based solely on a picture of their face.” The press release has since been deleted from the university website.

Tuesday, more than 1,000 machine-learning researchers, sociologists, historians, and ethicists released a public letter condemning the paper, and Springer Nature confirmed on Twitter it will not publish the research.

But the researchers say the problem doesn’t stop there. Signers of the letter, collectively calling themselves the Coalition for Critical Technology (CCT), said the paper’s claims “are based on unsound scientific premises, research, and methods which … have [been] debunked over the years.” The letter argues it is impossible to predict criminality without racial bias, “because the category of ‘criminality’ itself is racially biased.”

Advances in data science and machine learning have led to numerous algorithms in recent years that purport to predict crimes or criminality. But if the data used to build those algorithms is biased, the algorithms’ predictions will also be biased. Because of the racially skewed nature of policing in the US, the letter argues, any predictive algorithm modeling criminality will only reproduce the biases already reflected in the criminal justice system.

Mapping these biases onto facial analysis recalls the abhorrent “race science” of prior centuries, which purported to use technology to identify differences between the races—in measurements such as head size or nose width—as proof of their innate intellect, virtue, or criminality.

Race science was debunked long ago, but papers that use machine learning to “predict” innate attributes or offer diagnoses are making a subtle, but alarming return.

In 2016 researchers from Shanghai Jiao Tong University claimed their algorithm could predict criminality using facial analysis. Engineers from Stanford and Google refuted the paper’s claims, calling the approach a new “physiognomy,” a debunked race science popular among eugenists, which infers personality attributes from the shape of someone’s head.

In 2017 a pair of Stanford researchers claimed their artificial intelligence could tell if someone is gay or straight based on their face. LGBTQ organizations lambasted the study, noting how harmful the notion of automated sexuality identification could be in countries that criminalize homosexuality. Last year, researchers at Keele University in England claimed their algorithm trained on YouTube videos of children could predict autism. Earlier this year, a paper in the Journal of Big Data not only attempted to “infer personality traits from facial images,” but cited Cesare Lombroso, the 19th-century scientist who championed the notion that criminality was inherited.

Each of those papers sparked a backlash, though none led to new products or medical tools. The authors of the Harrisburg paper, however, claimed their algorithm was specifically designed for use by law enforcement.

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“Crime is one of the most prominent issues in modern society,” said Jonathan W. Korn, a PhD student at Harrisburg and former New York police officer, in a quote from the deleted press release. “The development of machines that are capable of performing cognitive tasks, such as identifying the criminality of [a] person from their facial image, will enable a significant advantage for law enforcement agencies and other intelligence agencies to prevent crime from occurring in their designated areas.”

Korn and Springer Nature didn’t respond to requests for comment. Nathaniel Ashby, one of the paper’s coauthors, declined to comment.