What if the technical challenges of identifying a person's face mean it will always be challenging to identify someone when the light and/or contrast levels are

What if the technical challenges of identifying a person's face mean it will always be challenging to identify someone when the light and/or contrast levels are lower? What then? Manually cripple the system and misidentify white suspects, too? This post's comments are a great example of why technologists are fairly terrible at engineering social solutions, much the same way sociologists tend to be terrible at engineering technical solutions.