A recent article in the Sarasota Herald Tribune [LINK] would leave one with the impression that is has been concluded with absolute certainty that the taser played no role whatsoever in the death of Derrick Humbert.
However, when I looked for other related news items, I found the following:
Medical Examiner Dr. Russell Vega said it appears the Taser did not cause Humbert’s death. “If it did, it appears to be have been a minor role or none. There’s no way to confirm that,” Vega said. “We simply couldn’t find any evidence the Taser played a role.”[LINK]
This statement is much more open-ended and more accurately reflects the state of the "science" surrounding taser deaths.
Another point worth mentioning is this extract:
Vega, a medical examiner with a solid reputation, says he thinks Tasers probably have contributed significantly to some deaths elsewhere. ... That doesn't mean Vega thinks stun guns are perfectly safe. They aren't. ...[ibid]
There's nothing wrong with the findings of Dr. Vega when taken in whole. But keep in mind that the absense of evidence is hardly clear cut proof considering that public inquiries have found that there may be several (ill-defined) taser death mechanisms. And the fact that Dr. Vega allows that taser can cause or contribute to death is worth highlighting.
The only unreasonable and irrational position on the issue of taser safety is the false claim that tasers are essentially perfectly safe with respect to inherent internal risk factors such as cardiac effects.
For example, comparing repeated taser hits to being hit with a ping pong ball. [Kroll, "Cardiac Safety" (sic), Taser International's website] That's the ultimate example of junk science, and it summarizes the apparently official position of Taser International. Even the NIJ panel noted the apparent risk of repeated taser hits.