This means that how you gather your data will affect what data you come up with. If you have really comprehensive data about potential outcomes, then your utility calculus will be more complicated, but will also be more realistic.
The median for how you find data could be more important in uncovering what the data means. Given that there are so many external variables that can bias the data in some way, I wonder how companies that gather data insure It's as close to being unbiased as possible.