Thanks for the considered and thoughtful response. I don't have much to add at the moment, but do still think that reducing waste (reducing the numerator, in t

Thanks for the considered and thoughtful response. I don't have much to add at the moment, but do still think that reducing waste (reducing the numerator, in the calorific viewpoint you suggest) is a reasonable goal - both in the supply chain and in consumer behaviour. The lead times concern (especially during a food supply shock) is valid - the only analogy I can think of just now is backup stored energy; i.e. considering canned food as 'batteries'. Enough to survive off-grid for a while in an outage (and ideally rechargeable over longer time periods).