The Trump Stone Concrete patio tiles all look pretty much the same Not so the natural stones that the traditional Japanese mason arranges to form the path for a traditional house.
Natural stones vary greatly in size and quality.
Here is a challenge that faces the stonemason. If one creates a path from point to point, all the good stones will be used at the beginning. The end the path, then will be inferior, The beginning of the walk will be superior to the end. The challenge is to work with the stones at hand to design a path with 'quality' along its entire length. These key points are significant functionally as well as visually and they are called trump stones .