People and events that shaped design
Design & Technology · Key Stage 2 · The School
Making the same thing twice
For most of history every object was made one at a time. So no two were ever identical. If a part broke, a new one had to be made from scratch. Then came INTERCHANGEABLE PARTS. These are components made accurately enough to swap between products. That changed everything. It made repair possible. It made mass production possible. It made the assembly line possible. Almost every product you own depends on it.
Standards you never notice
A STANDARD is an agreement. Everyone builds to the same specification. Think of screw threads, paper sizes, shipping containers, plug shapes and USB connectors. Standards are invisible when they work. They are infuriating when they are missing. That is why one charger fitting several devices felt like an invention. It was really just an agreement.
Why an idea spreads
Good design ideas spread when they solve a real problem. They also have to be cheap enough to copy. The shipping container is just a metal box. It reorganised world trade because it fitted lorries, trains and ships without being unpacked. The bicycle spread the same way. So did the flat-pack fitting and the touchscreen. Being clever is not enough. It has to be worth copying.
Before standardisation, every musket was fitted by hand. Its parts fitted only that musket. A broken lock meant a trip to a gunsmith. Then parts began to be made to a standard. Now any lock fitted any musket. Guns could be put together by unskilled workers. They could be repaired out in the field. The same idea gives us screw threads, paper sizes and shipping containers. It was not a single invention. It was a decision that everyone would build to the same measurements.