Suffice to say, we haven't seen any of those.
I consider any evidence that a truly random/spontaneous process occurs is evidence that the universe isn't closed, because something is happening without an internal mechanism to arbitrate it. And here we have the 2008 Nobel prize in physics, "for the discovery of the mechanism of spontaneous broken symmetry in subatomic physics".
I declare this Open Thread open for discussion of Less Wrong topics that have not appeared in recent posts.