From the article:

Police “have never successfully solved crimes with any regularity, as arrest and clearance rates are consistently low throughout history,” and police have never solved even a bare majority of serious crimes, University of Utah college of law professor Shima Baradaran Baughman wrote in another 2021 law review article, including murder, rape, burglary and robbery.

Existing research also affirms the findings in the recent report on police work in California.

Law “enforcement is a relatively small part of what police do every day,” Barry Friedman, a law professor at the New York University School of Law wrote in a 2021 law review article.

Studies have shown that the average police officer spent about one hour per week responding to crimes in progress, Friedman wrote.