Engineering is achieving function while avoiding failure.

In this quote, Henry Petroski defines engineering as the process of achieving function—creating something that serves its intended purpose—while simultaneously avoiding failure. Petroski suggests that the essence of engineering lies not just in designing something that works, but in ensuring that it performs reliably without breaking down. This balance between functionality and reliability is a core principle in the field of engineering.

Petroski’s statement also underscores the importance of problem-solving and precision in engineering. Engineers are tasked with addressing specific needs, but they must also anticipate potential problems or failures that could arise during the design or usage of a product. This means that engineering involves careful planning, testing, and designing to minimize the risk of failure while maximizing efficiency and effectiveness.

The quote reflects Petroski’s view that engineering is an ongoing process of trial and error, where success is determined by how well the designer manages to avoid failure through thoughtful design and testing. Engineers must not only solve problems but do so in ways that prevent structural failure, malfunction, or inefficiency.

Ultimately, Petroski’s quote highlights the dual focus of engineering: ensuring that things work properly while minimizing the likelihood of them breaking down. It speaks to the diligence, creativity, and foresight required in the field to create systems, structures, and devices that are both functional and durable.