This brings us quite smoothly into skepticism. There are two different skeptical positions in epistemology. Those being knowledge skepticism and justification skepticism. Knowledge skepticism is the belief that no one knows anything. The justification skeptic claims that no one is justified in holding any beliefs about things.
Some skeptics think it's impossible to know anything.
Agnostics of sorts. Some are only skeptical about certain areas of knowledge, it varies. I hope this has been a bit helpful. The best preparation for the meeting would definitely be having some ideas. Write them down, even if you're not sure whether you will choose to discuss them.