Necessary and Sufficient

Amit wrote in a comment:

Atanu, when you have time, I’d invite you to do some research on food production and malnutrition, and write a post on it – whether lack of food is because of insufficient production, or asymmetrical distribution and inefficient use of crops/food. Because it’s a very popular sentiment that’s paraded out every time a case is made for biotech crops – that it is the solution to world hunger. Would be interesting to read your take on it.

Sorry but it is unlikely that I will find the time to do the suggested research any time soon. But for now, here’s one common trap that we sometimes stumble into: the inability to distinguish between “necessary” and “sufficient” conditions.
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