Passage Summary: A legal mistake happened because some forensic experts felt they only needed to help the prosecution. The author argues that because these individuals were biased, we shouldn't hold the entire profession of forensic science responsible.

Conclusion: The field of forensic science as a whole should not be blamed for the injustice that occurred in the Barker case.

Reasoning: The specific failure in the Barker case was caused by the personal bias and lack of impartiality of the individual scientists involved, rather than the principles of the science itself.

Analysis: The argument relies on a 'bad apple' defense, distinguishing the actions of specific individuals from the integrity of the entire field. To strengthen this claim, look for an answer that reinforces this distinction, perhaps by stating that the standard practices or ethical codes of forensic science actually mandate the impartiality that these specific scientists ignored. If the profession's core tenets explicitly forbid the behavior seen in the Barker case, the author's conclusion that the field itself isn't to blame becomes much more robust.