John Woldemar Cowan, The Complete Lojban Language — Chapter 11 - Events… (1997)
“ I know the predication that Frank is a fool. Now we have it. Note that the implied assertion “Frank is a fool” is not a property of “le du'u” abstraction, but of “djuno”; we can only know what is in fact true. (As a result, “djuno” like “jei” has a place for epistemology, which specifies how we know.) ”
