There is, third, the general problem of causal order in nature. (religion-online.org)
The idea that events occur one after the other in a fixed causal order is part of our intuitive picture of the physical world. (sciencedaily.com)
2) An indefinite causal order, in which neither A is before B nor B is before A, with C being always at the end - center of the picture. (sciencedaily.com)