As far as the Chinese go, are you suggesting the Chinese miscalculated regarding their own weather manipulation or that it was done intentionally?
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well, they have had a drought year or two - and suddenly they have all this rain...
And with all those extra millions of people they can’t feed, you have to wonder...
It’s definitely worth considering. If so, then they may have traded one problem for another, equally bad or worse. When you cut corners with shoddy workmanship, in a rush to build a grand project, it eventually catches up with you.