Exactly,
Empty chamber goes back 140 years to single action revolvers that could fire if dropped. The empty chamber prevented that.
The concept is 140 years our of date.
The concept is 140 years our of date."
You might want to revise that date. I have several post WWI to pre-WWII S&W revolvers that do NOT prevent them from going off if the hammer is accidentally struck. Early Rugers also had this issue. And the Colt Single Action (SA) still can fire if the hammer is accidentally struck. In the case of the Colt SA, the change hasn't been made because those that buy Colt SA, don't want Colt to change it. I guess if you spend over a $1000 dollars for a piece of history, you don't want any change to be made.