Hmm, not sure I'm convinced. If you have an adversary in physical proximity willing to break the law to harm you...they could also drop tacks on the road? I'd understand if it was possible to plausibly deny the intent to harm, but that doesn't seem to apply here... WDYT? 
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Based on who does and does not attend the safety engineering conference I go to most years, I can say with a great deal of certainty that they have not.
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