 The EPR experiment with interacting systems accomplishes a form of indirect measurement. The direct measurement of Albert’s system yields information about Niels’ system; it tells us what we would find if we were to measure there directly. But it does this at-a-distance, without any physical interaction taking place between the two systems.  Thus the thought experiment at the heart of EPR undercuts the picture of measurement as necessarily involving a tiny object banging into a large measuring instrument. If we look back at Einstein’s reservations about complementarity, we can appreciate that by focusing on an indirect, non-disturbing kind of measurement the EPR argument targets Bohr’s program for explaining central conceptual features of the quantum theory. For that program relied on uncontrollable interaction with a measuring device as a necessary feature of any measurement in the quantum domain. Nevertheless the cumbersome machinery employed in the EPR paper makes it difficult to see what is central. It distracts from rather than focuses on the issues. That was Einstein’s complaint about Podolsky’s text in his June 19, 1935 letter to Schrödinger. Schrödinger responded on July 13 reporting reactions to EPR that vindicate Einstein’s concerns. With reference to EPR he wrote: