Regardless of the method used to estimate WTP, there are measurement errors, data inadequacies, and ongoing debates about the best practices for each method that contribute to the overall uncertainty of economic estimates.
There are nonavoidable errors built into the reporting method.
and i mean that kind of surprises me i mean you know because once oil gets so you know thick and yucky you'd wonder how they could you know clean that up enough to use it again but they can