Because the truth is that we do not have much of a buffer to work with at all.
David Friedberg is an “early Google executive who started the farming insurance company Climate Corporation”, and he just told the All-In podcast that the Earth operates on “a 90-day food supply”…
“The whole planet Earth operates a 90-day food supply, that means that once we stop making food, humans run out of food in 90 days.”
It is estimated that approximately 7.9 billion people currently live on the planet, and feeding everyone is a real challenge even if everything goes perfectly.