The metaphor is that the river is always changing. The water is different water, and the water is continuously shaping the earth around and beneath it.
It’s sound. The water might be going the same way, but speed, depth, and contents are constantly changing. Sure, you can cross a constructed bridge everyday and nothing changes.
This is actually crossing a river, on foot, wagon, horse, etc. It’s always changing.
The metaphor is that the river is always changing. The water is different water, and the water is continuously shaping the earth around and beneath it.
ok, but the water always goes the same way?
It’s sound. The water might be going the same way, but speed, depth, and contents are constantly changing. Sure, you can cross a constructed bridge everyday and nothing changes.
This is actually crossing a river, on foot, wagon, horse, etc. It’s always changing.