The Water Turns Brown
Shanghai approaches · 29.0° N, 123.5° E

The water changed colour over the course of the morning as we approached Shanghai. Blue gave way to green, then to a broad muddy brown. It was a gradual transformation, but a complete one. The familiar idea of sea water began to look inadequate. Something enormous on land was making its presence felt well before I could properly grasp its scale.
Branches and weed passed in the brown water, carrying the evidence of a very large river. I watched them go by with the interest of someone who has spent enough time looking at empty surfaces to find a floating branch informative. Each piece suggested an inland story, though I had no sensible way of knowing what that story might be.
Traffic built around us. Pilots, tugs, barges and ships in every direction gave the approaches a density entirely different from open sea. Everywhere I looked there was movement with a purpose I could only partly understand. The colours were muted, the water opaque, and the whole scene seemed to require more attention than I possessed, let alone knew how to distribute usefully.
The bridge became quiet again. It was the sort of quiet that means concentration rather than inactivity, and I took my approved place at the back. From there I could watch without becoming an additional consideration. I have grown fond of this arrangement. It gives me a view of competence while asking only that I refrain from confusing curiosity with contribution. Outside, the brown water carried its branches onward, untroubled by my efforts to interpret it.