  What then is the relation of the Dream Theory to the problems posed for empiricism by the discussion of D2 in 187–201?  The fundamental problem for empiricism, as we saw, is the problem how to get from sensation to content: the problem of how we could start with bare sense-data, and build up out of them anything that deserved to be called meaning. Plato thinks that there is a good answer to this, though it is not an empiricist answer. Sense experience becomes contentful when it is understood and arranged according to the structures that the Forms give it. So to understand sense experience is, in the truest sense, “to give an account” for it.