What approach to inherently safer design removes unnecessary complexity, resulting in reduced risk of human error?

• A. Automate
• B. Simplify
• C. Standardize
• D. Harden

Answer: (B)

Simplifying a design reduces unnecessary complexity, and that directly lowers the likelihood of human error. When systems are easy to understand and operate, there are fewer ambiguous choices, fewer control modes to navigate, and fewer steps to perform correctly. This clarity means operators can carry out tasks safely and consistently, making mistakes less likely.

Inherently safer design aims to eliminate hazards by design, and removing complexity is a straightforward way to achieve safer operation. For example, a control system with a single, intuitive interface is easier to use correctly than one with multiple modes and convoluted workflows, so the potential for misoperation decreases.

Other approaches have merit but don’t target the same risk reduction as directly cutting complexity. Automating can remove manual steps, yet automation can introduce new failure points and dependencies. Standardizing reduces variation across systems, which helps, but it doesn’t inherently make a system simpler to operate. Hardening strengthens components against damage, improving resilience, but it doesn’t primarily address the human factors that come with complexity.

So, the best approach here is to simplify.