What Are the Dangers of Facial Recognition?

Human engineers have to set kind of a threshold. It says like, how certain should you be of an obstacle to make you stoprigt and if you lower that threshold, then it keep stopping all the time when there's no obstacle. So where should that threshold be? Well, i don't think we work that way exactly. We do a lot more. And we make mistakes, but it's just, you know, the kinds of mistakes we make are very different from self driving cars. What are some other things that we ought to be thinking about in terms of dangers as bcause there is such a trend towards ai.