  Some philosophers think that there could be no moral facts as intuitionists understand these. This is because such facts would be unlike any other facts of which we know. Such philosophers think of non-natural facts and properties as ‘queer’ (see, Mackie 1977; Joyce 2001; Olson 2014). This queerness is probably at the heart of many philosophers’ uneasiness about the idea of a non-natural property. But we need to be clear about what it is that is supposed to be so queer about the non-natural nature of goodness as intuitionists understand it.