This argument can be generalized against anything police or prosecutors use to convict people. Fingerprints can falsely implicate someone in a crime. Witnesses

This argument can be generalized against anything police or prosecutors use to convict people. Fingerprints can falsely implicate someone in a crime. Witnesses are notoriously unreliable. If we allow prosecutors to present fingerprints or witness testimony as evidence, innocent people will sometimes get convicted. The most effective way to minimize false convictions is to never convict anyone.