[kaashif]

It is still useful to ask the question just so we know the answer. I admit the person asking in this case probably didn't mean it this way... :)

On speed limits, when it comes to road deaths, you get people saying "one death is too many" and so on when one of their loved ones die, even when speed limits are set to 20 mph.

These people are wrong. Asking why a 1 mph limit is bad can help reveal that we do put a cost measured in lives on convenience, and we do face the risk of death when driving a car, and everyone has a number they think is reasonable.

Asking why $100/hr is too high can at least help us decide on a quantitative way to decide on a number rather than just guessing.