Hm... perhaps a protest is in order? Because it really isn't considerate to constantly talk at length about a subject that some of the people present can neither understand nor discuss. It'd be okay every once in a while, but... rest assured, you are not the only one who is frustrated. Maybe we should discuss this with them together, and come to some sort of agreement vis a vis occasionally engaging in conversations that don't make some participants feel left out.

Today seems like a good day for food-cooked-outside-a-dining-hall. Give me a call if you want to go grab something before brunch (I think you have my number, but if not, it's on Facebook).