What we Don't Know

In the Edge:  Posed as questions from our own field that we dread being asked. The examples are very interesting.  Mapping out what we know we don't know.  For the social to the physical sciences.  One that strikes me is one that relates to my field of consumer behavior:  "How can we have this much data and still not understand collective human behavior?" ... An example of the limitation of our knowledge.  In fact a very broad limitation. Other examples are indications that we have answers, but we don't really like them. A former specialty of knowledge of mine, astrophysics, has broad interest from the public.  So I experience the 'dread'.   It does have many unknown spaces that are hard to admit we do not know.