An investigation of how law and science are similar. Against the background of proliferation of inquiries into the law of various aspects of science and technology it is worth noting that law and science share not only some interesting superficial analogies but also a deeper, common epistemological basis. More accurately, there are epistemological limits placed on both law and physics that are in all important respects similar. These limits on the 'quality' of knowledge imposed on both physicists and lawyers are known as a Problem of Observation existing in the disciplines of physics and law.