What does the Cloudflare cfduid cookie do?
The __cfduid cookie is used to identify individual clients behind a shared IP address and apply security settings on a per-client basis. For example, if the visitor is in a coffee shop where there are a bunch of infected machines, but the specific visitor's machine is trusted (e.g. because they've completed a challenge within your Challenge Passage period), the cookie allows us to identify that client and not challenge them again. It does not correspond to any user ID in your web application, and does not store any personally identifiable information.
Compesh is a question and answer (and debate) website, so before you make a debate, you better learn what an assertion is. I suppose you already know what a question is, and that you've typed it in the box. ;)
An assertion, is basically a statement you can make, that is either true or false.
Richer people have better health.
The question for that would be, Do richer people have better health?
And don't forget to make your assertion, match your question.