Not a modern safety rule, but computers take a lot of fun out of childhood. Having unlimited information at your finger tips is great, but there’s nothing like running, jumping, climbing, and throwing with other kids. Building snow forts, and having snowball fights. Playing tag, pickle, etc.
I saw a meme on the net that said it all regarding that. It goes something like...
“My generation grew up looking for frogs and shit.
Your generation grew up looking for a wifi connection - We are not the same!
No intellegent elites permit their children to have computers in their lives unitl about age 16