X Marks the Spot is written from the point of view of the users of mathematics.
Later mathematical concepts came from a process of abstracting and generalizing earlier mathemat.
Understanding those purposes leads to a greater understanding of why Mathematics developed as it did.
Since the beginning, mathematical concepts and techniques (such as arithmetic and geometry) were created as tools with a particular purpose like counting sheep and measuring land areas.
X Marks the Spot is written from the point of view of the users of mathematics