> The problem was that they then used that arrest data to make decisions about where to perform future searches and arrests. Because they found drugs where they

> The problem was that they then used that arrest data to make decisions about where to perform future searches and arrests. Because they found drugs where they had looked previously, they looked there again and found more drugs. Seems like the world's most obvious and easiest to solve problem tbh. This is like saying "I showed version A of my site to 1000 users and version B to 100. And version A lead to 500 conversions while version B only lead to 75. Therefore, version A is better because it lead to more conversions."