Anyone who spends any time outdoors knows the advances in air quality have been significant over the last 50 years.
And if epidemiological studies do not measure the right stuff, few care. Nobody, and I mean nobody wants to go back.
How much value do we get from the EPA and their ever-more-restrictive regulations?
When formed, they were needed. For much of what they do now, are they?
fine on cleaned up air.
but the remaining bureaucrapppy and extra taxes, fees...
smog checks on cars with only 1200 miles?
smog checks on cars that have passed many times before and only get driven 2000 miles a year?
tons of expensive bureaucraps for us taxpayers to support, too?
a little rationality would sure help garner some support
Check lead levels. Since leaded gasoline has been outlawed levels have gone back down .
That's not the full quote usually ascribed to Box. The version I've used is: “Remember that all models are wrong, though SOME are useful; the practical question is how wrong do they have to be to not be useful.”
To me, the most important first step in evaluating the output of a model involves determining how good it must be to be useful, not how bad it must be to be useless. The former is much more difficult since it involves looking at known parameters that are not included in the model. The output of a model must NEVER be used for important decisions if this step is not taken.