Urban Farming - they won't feed us all but they teach us an important lesson

I had an argument once about the value of community gardens as a way of providing local food and his comment was that they were stupid because community gardens would not be able to feed everyone in the city.

I didn't bother going any further with it as I realized he simply didn't get the point.

This article from Grist helps make the point much better than I could:

Urban farms won't feed us, but they just might teach us.

The article goes through different arguments about the profitability of urban farms but the key point is the good that urban farms do beyond food.

"The biggest reason to support urban ag is the number of people it touches, rather than the number of people it feeds."