Since; the science of accident reconstruction and cause determination have improved vastly.
Back then the mafia (or whomever) might have thought, eh, cyanide, who's going to trace that? Nowadays tests would prove something untoward likely happened. It's how nowadays nurses are caught for 'easing terminally ill patients', back then, it would have seemed like, oh, that was the disease, "natural causes".
In other words, this option would be a desperate option, one where discovery of tampering would be revealed. Only someone really desperate and without other alternatives would be reduced to opting. Someone stupid.
If this document contained modern TTPs (Tactics, Techniques, Procedures) it wouldn't be declassified. This is a historical document. This is also probably a repost. This document has been around for 2-3 decades.
>the science of accident reconstruction and cause determination have improved vastly.
My guess is the techniques have evolved accordingly. And federal authorities can take control of an investigation if it's in the interest of national security. The "magical bullet theory" is a great historical example of how federal authorities handle inconvenient evidence.
Since; the science of accident reconstruction and cause determination have improved vastly.
Back then the mafia (or whomever) might have thought, eh, cyanide, who's going to trace that? Nowadays tests would prove something untoward likely happened. It's how nowadays nurses are caught for 'easing terminally ill patients', back then, it would have seemed like, oh, that was the disease, "natural causes".
In other words, this option would be a desperate option, one where discovery of tampering would be revealed. Only someone really desperate and without other alternatives would be reduced to opting. Someone stupid.