It's a caveat for both - the brazilian model, and technological transfer to other climates. However, what I was really thinking of was the idea that Brazil's m

It's a caveat for both - the brazilian model, and technological transfer to other climates. However, what I was really thinking of was the idea that Brazil's model represents a resounding answer to malthusian objections. This may be true if a lot of other things pan out, but assuming that climate remains the same is a pretty big assumption.