The proponents of the position that fake is a crime against art (as for instance Nelson Goodman, Alfred Lessing or Thomas Hoving) maintains that there must be an aesthetical difference, however minute or discreet (in both its colloquial as mathematical sense that is), which, eventually will be aesthetical obvious. The fakers, on the other hand, insists that aesthetic perception is continuous and non-individual and thus not indexically attributed to any person, place or time.