Each piece of an arch is needed in order to support the structure. More than that, each one must be placed in tension with one another. The small pieces must be held up as it is being constructed so that both sides of the arch stay standing until the single middle piece is placed that allows everything to hold.
Are we making such structures? Or, are we just building towers that go straight up.
Are we dependent upon each other, or just stacking ourselves up as high as we can to see where it gets us?
