Four-point how-to list, and an example to make sure you’re clear on the concept.
Let’s see what we can do with this. I know: child safety seats! Properly used, they dramatically decrease kids’ injuries in car wrecks. They’re hella effective. So let’s claim that they really aren’t. In fact, their five-point harness can kill. See, the chest latch rides up and the two shoulder belts tighten until your kid will choke to death.