synapse1278 , 5 hours ago

I don’t know if we can still call the river clean. But I disagree that it’s sunk cost fallacy.

This river has been polluted for centuries and it’s no doubt that it requires considerable efforts and resources to make it safe to swim in on a regular basis.

But the effort is not in vein! And the important attention the Olympics brought on the subject of water quality to the public is very important too! More people realize they deserve clean rivers and we should do what it takes to get it !