ABSTRACT
Among the questions science cannot answer yet, there are questions about why the sciences cannot yet or perhaps will not ever be able to answer these questions. Call the questions about what a number is, or what time is, or what justice is, first order questions. The second order questions, about why science cannot as yet cope with the first order questions, are themselves questions about what the limits of science are, how it does work, how it is supposed to work, what its methods are, where they are applicable and where not. Answering these questions will either enable us to begin to make progress
There are urgent practical reasons to try to figure out the differences between scientific knowledge and other sorts of knowledge, if any. Matters of public policy and individual well-being depend on being able to tell science from pseudoscience. However, doing so is not as easy as many might hope.
