Even though ladders have been around for most of recorded history, they haven't changed much in function and design since their primitive origins. This simple design is so practical almost everyone uses it; on the other hand, it is so basic it is also easy to misuse and can be dangerous.

Falling from height is one of the leading causes of work-related injuries and death. The U.S. Bureau of Labor Statistics documents nearly 750 fall-related fatalities a year and another 300,000 nonfatal falls. More surprising than even that? Every single fall is 100-percent preventable.