While There Seem to Be Patterns to Terrorist Activity, We

While there seem to be patterns to terrorist activity, we cannot assume that the historical record offers firm footing for predictions because

A) we fear the moral consequences of making an ethnography which would give us a firm footing for predictions.
B) terrorism is a fast-moving subject.
C) we don't actually know that much about the history of terrorism.
D) terrorists are really just trying to trick us into thinking we know more than we do.