I agree completely with this. I got my first shotgun when I was a year older than the twins described in this article. You can bet the first lesson I learned was what happened to whatever you were pointing it at when you pulled the trigger, and the second lesson was to never point it at something I didn't want that to happen to. As it happens, I never killed anything except a sick woodchuck that wandered into our yard, but those lessons were incredibly valuable.
Oh, and I never asked to go outside and "play with the guns." I always asked politely if I could go outside and "shoot targets." Guns were absolutely not to be played with, but they were fun to learn to use.
This whole thing made me realize I'm going to run for President, btw. I think I finally realized what my views are. I'm a gun-owning conservative social anarchist libertarian that believes in improving Medicare. I think it's a unique platform. I also own an online casino. Look for me in 2016 =)
Oh, and I never asked to go outside and "play with the guns." I always asked politely if I could go outside and "shoot targets." Guns were absolutely not to be played with, but they were fun to learn to use.