What is the test for foreseeability in the analysis of negligence cases?

Foreseeability enters the analysis of negligence cases at several levels. It is, under the current law, a factor in determining remoteness. This is another aspect of deciding where to draw the line on compensation for the consequences of one’s negligent actions. “[B]ecause of convenience, of public policy, or a rough sense of justice, the law arbitrarily declines to trace a series of events beyond a certain point. This is not logic. It is practical politics.” (Palsgraf v. Long Island R.R. (1928), 248 N.Y. 339 at 352, as quoted by Fleming at p. 203).