Elves. Elves from the Tir. Then this disease—frag, ten people down in two days, it does sound like VITAS. Is there a connection with the elves—a real causal connection? Or is it just coincidence? From out of the deep black depths of the past, I flash on something from a freshman philosophy course. One of the common logical mistakes— post hoc, ergo propter hoc —"after this, therefore because of this"—the assumption that because event B follows event A that event A somehow caused B.