Removing the wooden form (the former) out from under the bridge is not unlike taking the training wheels off a child’s bicycle.
For a certain length of time, some sort of support is needed , but then, in a moment of time, that dependence suddenly disappears. That which was there has served its purpose.
The bridge, and the child, have discovered how to stay upright on their own.
The magic happens, and then it’s all just water under the bridge.
