I am unimpressed by the idea that we can solve this with more technology. Some of those billions of people feed themselves. Theit biggest problem isn't minmaxing an 8t/ha yield to 11t/h. Their problem is getting from 1t/h to 6t/h which is entirely possible with just manure, some crop rotation and good quality seeds that can actually be resown.

The idea that e.g. hybrid rice is going to solve world hunger is absurd.