Hay spoke of the difficulty of conveying the uncertainty that goes along with
these predictions. For example, his team spends half of its time developing the
correct uncertainty envelopes for the maps, and he does not have a good idea
on how to communicate this uncertainty to the many constituencies that would
find the maps useful. One aspect of these maps that he finds particularly vexing
is the tendency for people to just look at the map and ignore all of the richer
detail about uncertainty that his team provides with the maps.