Actually world hunger has been drastically reduced with China becoming more wealthy and investing in Africa, but I agree that we need to think about a radical change of our economic and political system to face the possibilities our technology gives us.
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Sorry, didn't have time to respond the other day, had to go to a wedding. "Putting food on the table" is a British phrase meaning to earn a wage. It doesn't litterally mean buying food. Perhaps it's a poor choice of a phrase as I can see it might not travel well.