Type #1 is the naive optimist. It seems only natural they would be optimists, because nothing bad has ever happened to them. They're the transient optimists though, because it isn't going to take much to shake them out of optimism, and when they crash and burn, it will be a real spectacle as they go down, unfortunately. I somewhat pity this type of optimist, because I know what's in store for them. Most often seen in college freshmen.
Type #2 is the oblivious optimist. Sure, bad things happen to them. But Lemony Snicket captured this type of optimist perfectly, saying that: '