A true solution to Russell's paradox Thank you for the clear and helpful answers (here and elsewhere on the site), in contrast to my own questions ;)
As a layman, it is interesting to hear that no domain of discourse is truly universal.
So when we say, explicitly or otherwise, that «not everything is within this domain of discourse»,
that which is inside that domain and that which is not, when taken together still do not form a universal domain of discourse but only a larger one.