Comment by PaulDavisThe1st

> People don't know how to be efficient at scale.

Do you understand how much more food we produce on roughly the same amount of land (globally) than we did 60 years ago? Claiming that we don't know how to be efficient at scale is absurd.

Now, it is true that these production levels are very dependent on a bunch of practices that are likely not sustainable, and that's a serious and pressing issue. But the problem is not efficiency.

Further, as others have noted here (and so have I), it is animal-based food production that uses so much of the water that we use, and that's a choice we've made (particularly in the USA). We could make different choices (and some of us have tried to).