I love this comment. I am so sick and tired of the term "common sense" being used as a panacea for those on the bottom of a Dunning Kruger curve to justify wanting their ignorance to be taken as seriously as other people's knowledge. I can think of dozens of ways someone could misuse a ladder that would definitely result in property damage and quite possibly injuries and even fatalities.

I wonder how many people are killed yearly because they buy various tools and don't read the damn instructions because they're definitely smart enough to use this and be safe already, it's common sense after all!