BTW, I have seen firearm failures where they went boom with finger off the trigger.
But will agree, most folks have the booger hook on the bang switch and either lie about it, or flat out THOUGHT they didn't.
People have different motor skills and sensations of touch.
Some think off the trigger is also out of the trigger guard.
And some can lay a finger they thought was out of trigger guard, on side of trigger and work the bolt and "click".
Dude of some experience tripped my 600's trigger doing that.
Screamed I set it dangerous.
I was watching and told him his %$#@ finger was on the damn trigger.

Gun was unloaded, triple checked and he was testing trigger, pointed safe direction.
He had never shot a light trigger evidently (under 2#).

Who knows how many times he did that crap w a loaded gun and by sheer luck didn't have a boom.
Obviously of poor habit.

That was a real learning experience for him,

Yes, he bought the rifle.