My oldest is 26. When she was in a walker, we lived in Slavic Village in Cleveland. We were the second owners of a 100+ year old home -- I was a cub-lawyer and didn't have two nickels to my name. Her father, brother and I (mostly them) had gutted the attic, insulated and drywalled it. We carpeted it and turned it into a TV room. Anyways, Mrs. U was across the street at her sister's home and the baby was in the walker. This country-boy had barricaded the steps and was playing river raider on Nintendo. Well, the Polish-Little-Pampered-Princess #1* managed to push the barricade over and fell down the steps in her walker.
She could've broken her neck. I disconnected the video game right then and there. I haven't played a video game since. That was 1991.
* - Calling them princesses comes honestly -- family lore has that my wife's great (or great-great) grandmother was queen of the Hohenzollern Empire and fled Europe at the turn of the century. If true, and Mrs. U swears it is, then P1 and P2 are truly legally Princesses.