Along with squares and rectangles, boundary lines emerge, separating not just farmland from the wild but also one farmer's landholding from another. The land itself—previously free—becomes a valuable asset, permitting those who own it to become even wealthier by growing more crops. Wealth becomes an intrinsic value, and those who don't have any are seen as worthless. Significant hierarchical inequalities emerged over the first few thousand years of agriculture.
Wow. With the concept of shape. Boundary and ownership took form
