There are 10 types of people: those who understand binary, and those who do not.—anonymous
In landscape architecture there is an evolutionary design technique using desire lines.
Problem: Where to build, and how wide to build, outdoor pathways?
Solution: Wait for a year and observe the paths people naturally walk, and traffic volume. Create permanent paths along these desire lines, as wide as appropriate. Design is pulled from demand rather than speculatively pushed.
Although challenging to apply in product design, this is one source of inspiration ...