There are a whole groups of folks with logical constructs that runs along the lines of
1. We are not wrong!
2. The sun is rising.
3. The earth is warming.
4. Unless we get massive taxpayer funding, we're all gonna die.
Metaphorically speaking in general. Pointing out that if you wait a few hours, the sun will be setting is futile. See step 1, which is not negotiable. Here's a fellow with an astounding 85% success rate at predicting long term weather patterns:
This sort of reasoning is popular among economists too, but the presence of one on every virtual street corner differing only in the details of step 2 has reduced their value.
What is needed is a derisive and catchy descriptor that can be used at a moments notice like a bucket of cold water on a wicked witch. Chicken Little is good, but a lack of studies in classical literature has reduced its effectiveness. I blame the teachers unions.