Didn't learn or just weren't taught... hey, we are in the same boat! But these historical facts are actually pretty interesting!
If we look back in time, when parents apparently didn't seem overly concerned with infant or child safety, we can behold some very weird or outstandingly stupid and dangerous inventions. All of these were really real things, some of them weren't mass produced or marketed, but ALL of them will make you shake your head few times. Via: How To Be a Dad