Part of the expense of products is to ensure a good, safe design. I could use common sense and research toxicity of materials, off-gasing, tensile strength, re

Part of the expense of products is to ensure a good, safe design. I could use common sense and research toxicity of materials, off-gasing, tensile strength, resistance to hot/cold/UV, shapes that are vulnerable to choking, strangulation, puncture wounds, etc. If every parent had to go through this for each purchase it would be a massive, unnecessary duplication of effort. This would take considerable time just for childrens toys, not to mention food, cars, and office buildings. I'm glad that cars have recalls driven by real engineers that drivers are proactively contacted about rather than relying on the average person's "common sense" about vehicle safety.