 Attempts have been made to derive from it a comprehensive theory of ethics, such as Iain King's quasi-utilitarianism in his book "How to Make Good Decisions and Be Right All the Time" (2008).Despite gaining some of the better qualities of the component theories from which it is derived, quasi-realism also picks up vulnerabilities from these different components.Thus, it is criticised in some of the ways that moral realism is criticised, for example by Fictionalism (see below); it is also attacked along with expressivism and other non-cognitive theories (indeed it has been regarded by some as a sub-category of expressivism).