01 / THE IDEA
What does it mean?
People spend most of their time using other products, so they bring familiar expectations to yours. Novel interaction has a learning cost.
02 / IN PRACTICE
Make it concrete.
Illustrative example: A checkout uses a familiar cart and payment sequence instead of inventing an unfamiliar purchase gesture.
03 / WHAT TO WATCH FOR
A common mistake.
Copying competitors even when their patterns fail your users.
04 / WHEN IT HELPS
When should you use it?
When deciding whether to introduce a novel navigation pattern.
05 / FURTHER READING
Explore the source.
Laws of UX — Jakob’s Law ↗A reference for further learning, not an endorsement or verbatim quotation.