Sometimes I am interested to know what the stories are, what shaped this person's view and makes them believe as they do. I will respectfully ask sometimes. Beliefs can also shift with experience and the exchange of ideas. I will share my own thoughts if the person is open and maybe we both learn something.

Research: Street Epistemology.

Not that I agree with flat earth at all, but all conspiracys are considered false until proven correct. I quick google search of proven ones will make you think.

Try to do your job till you search for another one. Keep a safe distance from your boss.

It's a family run resturant located in North Podunk Canada, so my options are very limited, other to smile and nod, and then binge the wackiness on social media, hey at least it's entertaining

You can alway stake notes and write a satirical book, movie or story based on the whacky ideas.

What I really wonder aobut is how do such persons end up beign in charge in the first place?

I don't engage with conspiracy theorists and flat earthers about their beliefs, it's too frustrating and and complete waste of my time.

Wow that would be hard. My boss is a devout Christian that’s bad enough. I don’t know if I could deal with yours

I try to avoid talking about it. I don't know if I could survive with a flat earther though...

And you're sure he's not just pulling your leg for fun? Most people keep controversial views to themselves at the work place, don't they? I don't know, I'm self employed and I don't, haha! I would think that companies would adhere to a religion/politics free zone in the work place. If not, perhaps you could suggest it. (Anonymously?) Save that, just say "I think something differently, but this isn't the place for that discussion." And hope he doesn't make life tough for you at work. That is awkward, for sure!

Smile and nod a lot. Talk about cool science articles you read often. Change the subject often, too. lol

Condolences. It's absolutely not work appropriate unless your working for a Flat Earther Group. Or some conspiracy group.

I can't imagine spouting something like that in a work place.

I have had bosses and workmates that talk about politics and religion at work as if everyone around them agrees with them. I generally just change the subject or make an excuse to leave the room.

You don’t talk about that stuff. Period.

Why is he vomiting/pooping at work?! That's unprofessional & uncool.?

Let sleeping dogs lie