What aspect must not be overlooked when using guardrails and personal fall arrest systems?

When implementing guardrails and personal fall arrest systems, training and compliance are paramount. These systems are critical for ensuring worker safety in environments where there is a risk of falling. Proper training ensures that all personnel understand how to properly use the fall protection systems, recognize potential hazards, and are aware of the legal regulations that govern their use. Compliance with safety standards is essential to maintain a safe work environment and to prevent accidents. Without rigorous training and adherence to compliance guidelines, the effectiveness of guardrails and fall protection systems can be significantly diminished, potentially leading to serious injuries or fatalities. While considerations such as cost, aesthetics, and weather conditions are important in a broader context, they do not outweigh the fundamental necessity of ensuring that workers are equipped with the knowledge and skills to use these safety measures effectively.