Maybe it’s possible to build a perfect implementation, but that is not what we got.

What exactly are you referring to? The whole approach is built in a way that doesn’t really give anyone any way to screw things up. Please be specific.

You know what does work? Masks and vaccines. Phone-based tracking was a dangerous waste of time.

Unless you were testing yourself literally every day, phone-based tracking is a great way to tell you when you should test yourself. It’s a great addition to other preventative measures, and I have no idea how you could come to this conclusion while thinking rationally about this topic.