You clearly have no idea.
Most accidents happen because someone forgot the gun is loaded and failed to check it before handling it and showing it to a friend.
Not so quick on the trigger there chap.
The above is not an accident it is negligence. Negligence. Period. No question.
You cannot forget a gun is loaded as rule #1 is treat all guns as if loaded. Period.
Anytime a firearm is handled in a situation other than bringing it to bear on a target the handler is always to check that the weapon is in an unloaded state. Always. Period.
If I am showing someone a weapon, even to a group of 100 people, before the weapon has left my possession it has been cleared and checked and demonstrated to be clear, Every time. Each time the weapon comes back into my possession I will clear it and check the chamber. Each person receiving the weapon is also expected to clear the weapon and check the chamber. Always. Every time. Period. Without exception.
It is not possible to forget a gun is loaded if you treat all firearms as loaded. Period.
Therefore the 'accident' in accidental shooting is not related to forgetting the weapon was loaded but would be someone reason.
Reasons such as over penetration. Backstop failure. Accidental discharge where an operators finger was on the trigger before the weapon was pointed at the target. A semi-auto that suffered a mechanical failure resulting in a run away firing event. These might be accidental discharges.
But shooting someone by forgetting a weapon is loaded is not possible if all weapons are treated as loaded.