So I'm taking my last math class before I graduate. It's called Real Analysis, and believe me its not nearly as cool as it sounds!
So today we are looking at open and closed intervals and open and closed sets.
(0,1) is an open set and [0,1] is a closed set (If you would like me to explain exactly why they are either closed or open I will later).
Now some sets such as O (the empty set) and R (the set of all real numbers) that are both closed and open (again, if you would like me to explain this, I can). Now mathematicians have given a name to these special sets that are both open and closed, can you think of what the super sophiticated mathematical term could be? Thats right! A set that is both open and closed it called Clopen.
Sometimes its hard to admit that you have joined a "society" full of dumbasses...