To simply say that the speaker must be lying in either part 1 or 2a b doesn t satisfy the fact that it can be considered a true paradox rather than a physical error whether intentional or not Consider that part 1 is just an affirmation of something which is recognised to be true part 1 is affirmed by the speaker as a statement to alert others to a form in which they would understand such as it is raining part 2 then simply has to be the affirmation of what the speaker believes to be true rather than a conveyed message of indication