While common sense seems like it should be enough to ensure safety, the document argues that true health and safety requires more than just common sense. Common sense is based on past experiences and differs between individuals and groups. It also does not consider unseen risks from electrical wiring or asbestos. Additionally, common sense is not innate but learned, so children and those without training may not have the common sense needed to identify hazards. True health and safety demands following established laws and approaching issues intelligently with an open mind, not just relying on common sense.