How to design for clarity when things aren't clear at all

This past weekend, data visualization, and specifically data visualization around depicting uncertainty, got a bit of national attention. As someone who designs with data and uncertainty, this was very exciting to me (not to mention it gave me a way to talk to my family about what I do!) On Wednesday President Trump spoke in front of reporters holding up a map of the approaching Hurricane Dorian. The reason this became a news items on its own is that the map had been altered from its original form. A map of the gulf coast that originally had a cone-shaped graphic mapping the potential path of the hurricane now had a new addition -- an extra bulbous bump. The new addition was immediately suspicious, and there are a couple of obvious reasons why.