> Fluidity recognizes that ethics can have no ultimate foundation, but that we can still often make clear judgements. [...] It takes ethics to be a matter of collaborative practical improvisation that is responsive to specific situations. Lacking any ultimate principles, an engineering approach to ethical mastery is impossible, but ethical skill—a toolkit of methods for ethical bricolage—can be learned.
If you find this interesting, I recommend Ethics Without Principles by Jonathan Dancy [1], or the Stanford Encylopedia of Philosophy article on Moral Particularism [2].
[1] http://www.oxfordscholarship.com/view/10.1093/0199270023.001...