Engineering or technology is the making of things that did not previously exist, whereas science is the discov... — Henry Petroski

Engineering or technology is the making of things that did not previously exist, whereas science is the discovering of things that have long existed.

Author: Henry Petroski

Insight: We often treat science and engineering as cousins, sometimes even as the same thing. But there's a crucial difference that shows up in how we actually live. Science is detective work—figuring out how the world already operates. Engineering is creation—making something new that changes how we live. A scientist discovers that electricity flows through materials; an engineer figures out how to wire a house so you can flip a switch and have light. This distinction matters because it shows why both matter in totally different ways. You don't need permission from nature to do science—the rules exist whether or not we understand them yet. But engineering requires a kind of confidence bordering on audacity. You're not just observing; you're deciding something should exist that never did before, then making it real. That requires combining knowledge with imagination and risk-taking in a way pure discovery doesn't demand. The everyday result? Every tool you use, every system that supports your life—your phone, your water system, the bridge you cross—is someone's act of engineering imagination. Meanwhile, scientists are still discovering how those systems actually work at deeper levels. We need both. But next time you use something ingenious, remember: someone didn't just understand the world better. They decided to remake a corner of it.

Source: To Engineer Is Human: The Role of Failure in Successful Design, 2018