This is a fair point, there definitely is the ability for these tools to levy a lot of destruction to capital, structure, and people as well. If someone is rea

This is a fair point, there definitely is the ability for these tools to levy a lot of destruction to capital, structure, and people as well. If someone is really looking to construct this as an investment, negative results does not necessarily mean a negative investment strategy -- maybe the machines of war are a hedge that sometimes works and sometimes doesn't. I think the construction of nuclear weapons post-1950s are an example of a successful hedge, wherein machines of war were invested in, but never caused destruction. To your point, though, it is definitely an interesting and worthy data point if the proposed thesis is being pursued.