ABSTRACT
It is interesting that ideas showing affinities with the veiled reality concept were independently developed by thinkers working in the field of pure philosophy of science, which means that they did not base their conceptions on detailed physical knowledge of any sort. There can, of course, be no question of presenting a balanced account of these subtle and often quite sophisticated theories. Indeed it is only possible to mention briefly two or three examples, concentrating only on one of them. Difficulty 4a is one facet of the so-called Schrodinger cat paradox, and it may be said to constitute the central riddle of quantum measurement theory, nay, even of the whole of quantum mechanics. Difficulty 4b, the "and-or" difficulty, though often overlooked, is also intriguing. The chapter argues against "nonseparability of empirical reality" by using the idea that in the empirical view ontological considerations should be barred.
