Beautiful. This reminds me of a story of children playing on the top of a great mountain with steep cliffs on every edge:

- The fall is steep, sharp, and dangerous, so the kids and their families tend to stay at the center of the cliff, where they are furthest from the edges.

- Then someone comes along and builds a fence (a boundary) along the edge.

- So now (because the boundary is there to show them where to stop), the kids can use all the land on the cliff (and not just the safest center) to always feel safe without fear of crashing.