  Following Bell's work, a broad consensus has it that the quantum realm involves some type of non-locality (for examples, see Clauser and Horne 1974, Jarrett 1984,1989, Shimony 1984, Redhead 1987, Butterfield 1989, 1992a,b, 1994, Howard 1989, Healey 1991, 1992, 1994, Teller 1989, Clifton, Butterfield and Redhead 1990, Clifton 1991, Maudlin 1994, Berkovitz 1995a,b, 1998a,b, and references  therein).[5]  But there is an ongoing controversy as to its exact nature and its compatibility with relativity theory. One aspect of this controversy is over whether the analysis of factorizability and the different ways it could be violated may shed light on these issues. Factorizability is equivalent to the conjunction of two conditions (Jarrett 1984, 1989, Shimony  1984):[6]