Like I said, look it up. It's not hard to find. The studies showed that people under stress if not adequately trained forgot to deactivate the safety upon drawing their weapon. These studies were just a few of the reasons why PD's now mostly use striker fired pistols without external safeties.
Quite the high road you took their wasn't it?
Like I said, I gave it a good faith attempt, including using variations of the phrasing from your first post. If they're so easy to find, would you consider sharing a few links? Or even sharing what terms a person should google?
RE "Quite the high road..." It's rather within the THR code of conduct (not to mention normal decency and logic) to suggest that a claim that can't be backed up may not be true. I would hope your or anyone else would regard my claims with the same skepticism if they didn't makes sense and could not be sourced.