Barrow looks at what limits there might be to human discovery, and what we might find, ultimately, to be unknowable, undoable, or unthinkable. that any Universe complex enough to contain conscious beings will contain limits on what those beings can know about their Universe; that what we cannot know...

Barrow looks at what limits there might be to human discovery, and what we might find, ultimately, to be unknowable, undoable, or unthinkable. that any Universe complex enough to contain conscious beings will contain limits on what those beings can know about their Universe; that what we cannot know defines reality as surely as what we can know.