“…40 Others disagree, suggesting that although environmental crises did hurt the empire over time, "it is probably right to see them as subsidiary, rather than primary, causes of the decline of the ancient economy." 41 Even Harper admits that the Antonine Plague, a major pandemic event that forms part of his narrative, did not produce social chaos, was not a "fatal blow," and did not cause "the fabric of the empire" to "come unwound," noting, in fact, that it "roared back" from a second major plague in the third century CE. 42 Indeed, when considering the specific effects of climate change or associated calamities such as disease, Harper's superb analysis cannot assign relative causal weight to any single factor, and he admits that the real story is how these ecological insults combined with pressure from outside forces (such as the Goths and Huns) to fracture the empire.…”