Numerous speculative solutions have been offered to the palette problem. Patrick Lewtas (2017) avoids the palette problem altogether by postulating an enormous number of fundamental micro-experiential properties, one corresponding to every basic quality we find in human experience. Luke Roelofs (2014, 2015, 2019) develops a form of constitutive micropsychism according to which we cannot recognise or imagine the basic micro-conscious ingredients which make up human consciousness, because we never experience them in isolation from the extremely complex combinations we find in our experience; given that we are unable even to imagine the micro-conscious ingredients, we have no good reason to deny that those ingredients are extremely small in number. Keith Turausky (2012, Other Internet Resources) considers the view that perhaps there is just one fundamental mental quality that somehow contains all others, in something like the way white light contains all colours.