Well-worn paths
One way to determine walkway placement is to let them emerge naturally. As people navigate between and around buildings, paths begin to wear. These trails become the blueprints for more permanent construction.
Even better is the name for these lines: desire paths.
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If you’re game, zoom out. Soak in the big picture of your life. Take note of your own desire paths. Do they follow the roadways that the culture has already paved? Perhaps there are some interesting lines that are the result of your own creative journeying.