Suspect Tasered 28 times and dies. Taser Trigger Amnesia?

The Constable stated he tasered the suspect 8 times. The weapons shows 28 times. If an officer Tasers a suspect 8 times and it doesn't stop or subdue the suspect, isn't it time to move to another tactic? These multiple tasering cases (more than 3 "rides") resulting in death are becoming a pattern. What is the problem here? Taser trigger amnesia brought on by stress?
P.S. Sorry for the drought of posts. Went out of town for Spring Break and am now grading grad course essay exams. Thanks to all those who posted recently.
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