Another old adage applies: You can make anything fool proof - you just can’t make it damn-fool proof....
There’s another old saw about how difficult it is to fool-proof something because they keep making better fools.
The one I know is, You cannot make anything foolproof because fools are so ingenious.
Sort of like the Sun Screens people put in their windshield to block the sun, has to have the words remove before driving, when clearly you can't see anything forward of the car.
Lawyers make all this necessary, no wonder the earlier settlers tried to ban them according to Paul Harvey's "The Rest of the Story."