The Engineering Design Process

Watch

• The Engineering Design Process ↗Smithsonian National Air and Space Museum
• The Engineering Process: Crash Course Kids #12.2 ↗Crash Course Kids
• What's an Engineer? Crash Course Kids #12.1 ↗Crash Course Kids
• How the Boeing 787 Works | Full Documentary ↗Real Engineering
• How Are Highways Designed? ↗Practical Engineering
• The Map of Engineering ↗Domain of Science

Read

• The Design of Everyday Things ↗An essential primer on how good design anticipates human behaviour, revealing the often-overlooked principles that govern user satisfaction and frustration.Don Norman
• To Engineer Is Human: The Role of Failure in Successful Design ↗This insightful work demonstrates how understanding past failures is not merely cautionary, but a fundamental catalyst for innovation and robust design.Henry Petroski
• Design ThinkingThis seminal essay articulates a human-centred approach to innovation, framing design as a systematic process for solving complex problems across disciplines.Tim Brown
• The Mythical Man-Month: Essays on Software Engineering ↗A timeless treatise on the complexities of managing large engineering projects, offering enduring wisdom on team dynamics, scheduling, and the inherent challenges of system building.Frederick Brooks Jr.
• No Silver Bullet—Essence and Accident in Software EngineeringA profound reflection on the intrinsic difficulties of software development, arguing that no single technological breakthrough will ever fully eliminate the inherent complexities of the craft.Frederick Brooks Jr.

Voices to follow

• Don Norman ↗His foundational work on human-centered design and usability profoundly shapes how engineers conceptualise user interaction and product functionality, advocating for designs that truly serve human needs.Co-founder, Nielsen Norman Group; Author, "The Design of Everyday Things"
• Tim Brown ↗As a leading proponent of "design thinking", he champions a human-centred, iterative approach to innovation, offering a robust framework for tackling complex engineering challenges.Chair, IDEO
• Bill Buxton ↗His extensive research into human-computer interaction and the critical role of sketching and prototyping provides essential guidance for engineers navigating the creative, early stages of product development.Principal Researcher, Microsoft Research; Author, "Sketching User Experiences"

Glossary

• BrainstormingThis is when you come up with as many different ideas as possible to solve the problem, no matter how wild or silly they seem at first. The goal is to generate a lot of options before picking the best ones. For example, if you need to raise money for a school trip, you might brainstorm ideas like a bake sale, a car wash, or a talent show.
• ConstraintsThese are the limitations or restrictions that engineers must work within when designing a solution. They can include things like available materials, budget, time, or safety rules. For example, if you're building a robot, a constraint might be that it can only use parts from a specific kit, or it must cost less than 500 rupees.
• CriteriaThese are the specific goals or requirements that your solution must meet to be considered successful. They help you judge if your design is good enough. For example, for a new school bag, criteria might include that it must be waterproof, have at least three pockets, and be comfortable to carry.
• DesignThis is where you choose the best idea from your brainstorming and create a detailed plan or blueprint for how your solution will look and work. It's like drawing a detailed map before you start building something. For example, after deciding on a new school bag design, you'd draw sketches, pick materials, and plan its features.
• Engineering Design ProcessThis is a step-by-step way engineers and designers solve problems and create new things. It helps them organize their thoughts and actions from an idea to a finished product. For example, when creating a new smartphone, engineers follow this process to make sure it works well and meets user needs.
• EvaluateAfter testing, you look closely at the results and decide how well your solution met the original goals and requirements. You figure out what went right, what went wrong, and why. For example, after testing the playground slide, you'd evaluate if it was safe, easy to use, and met the size requirements.
• Iterate/ImproveThis means making changes and improvements to your design based on what you learned during testing and evaluation. It's a cycle of refining your solution until it's the best it can be. For example, if your playground slide prototype wasn't stable enough, you'd go back to your design, strengthen it, and build a new, improved prototype.
• Problem IdentificationThis is the very first step where you clearly figure out what problem needs to be solved or what need has to be met. It's like finding the exact puzzle you need to solve before you start looking for pieces. For example, realizing that students often forget their lunchboxes at home is identifying a problem.
• PrototypeA prototype is an early, often simpler, version of your solution that you build to test your ideas. It doesn't have to be perfect, just good enough to see if your design works. For example, making a small model of a new playground slide out of cardboard before building the real one is creating a prototype.
• ResearchThis involves gathering information and learning everything you can about the problem and possible solutions. You might look up existing ideas, talk to people, or read books and articles. For example, if you're designing a better school bag, you'd research current bag designs, materials, and what students like or dislike about their bags.
• SolutionThis is the final product, system, or answer that successfully solves the original problem or meets the identified need. It's the end result of the entire design process. For example, the fully built, safe, and fun playground slide that is installed in the park is the solution.
• TestThis step involves trying out your prototype to see if it works as intended and solves the problem effectively. You collect information on what works well and what doesn't. For example, having a few students try out your cardboard playground slide model to see if it's stable and fun is testing it.

Threads 6

Where this connects to other fields, and why it's worth knowing.

• Gender & Society Sociology

  Crash test dummies, medicine doses, phone sizes, and office AC were mostly calibrated on the average man's body. So in the same car crash a woman is more likely to be badly hurt, because the seatbelt was designed around someone shaped differently. When engineers treat 'a human' as 'a man,' half the world gets a worse fit.

• Central Banks & Monetary Policy Economics

  When a central bank changes interest rates to steer the economy, the effect only shows up a year or more later, and the delay keeps changing. It's like driving while the windscreen shows the road as it looked last year. With feedback that slow and unreliable, overshooting the target is almost baked in.

• Democracy Political Science

  We usually think elections are about picking the smartest leader. One thinker flipped that: the real magic of democracy is that you can dump a terrible leader without a war, just a vote. It's less like a talent contest and more like the emergency switch that shuts off a machine before it explodes.

• Criminal Law & Punishment Law

  An engineer builds a bridge to hold three times the weight it'll ever carry, wasting steel on purpose so it never collapses. A court demands proof 'beyond reasonable doubt,' letting some guilty people go free so it rarely jails an innocent one. Both deliberately accept the small, cheap mistake to dodge the giant, catastrophic one.

• Psychotherapy Psychology

  An engineer builds a small prototype and tests it before betting on a full bridge. In one kind of therapy (CBT), the therapist and client do the same thing with a belief: turn 'everyone hates me' into a tiny experiment and check it against reality. Both take a scary unknown and shrink the risk by testing a small model first.

• Scarcity & Trade-offs Economics

  Every requirement an engineer writes into a design, how strong, how cheap, how safe, is secretly a choice to give up something else. Make a car cheaper and you might make it a hair less safe. So locking down a design spec is really a quiet decision about how much safety we'll trade for money, engineering as a hidden argument about what a life is worth.