Definition
If something is 'foolproof,' it's so simple and well-designed that it's impossible to mess up, even if someone is inexperienced or not very bright. It implies resistance to human error. It's similar to 'infallible,' but focuses more on ease of use and resistance to misuse than inherent perfection. Think of a cooking recipe with only two steps. It's designed to prevent mistakes. 'Foolproof' emphasizes practicality and user-friendliness. The goal is to make it impossible to fail.