I've found models rarely, if ever, translate to the real world. Not in complex systems. For artificially created environments it might work. Models are useful in that you can see how expected results compare to actual results. When looking at this as a societal wide concept for helping (feed) mankind, other large scale problems must also be considered. Pollution, carbon cycles, the nitrogen cycle, employment/unemployment, local vs corporate economy, erosion and more. It's not sufficient to count monetary cost vs harvest alone, as it's just a model of the same failed systems creating huge offset costs (and no responsibility) and claiming thrift. An ecosystem at carrying capacity does not need to take 100 years. There are a whole bunch of functional parts and put together in a design we can greatly accelerate the process. We don't wait for pioneers to arrive, we can bring them in, and mid-late succession at once. We provide the fast growers to shade the emergent layer, we provide habitat, pollinators and accumulators and fungi and other innoculants. Nitrogen fixers and mineralisers. We don't wait for erosion and land features to create a soil, we use earthworks and trap the water and nutrients/minerals where we want them. We don't wait for rocks to weather, we can crush and distribute them remineralising soil to encourage the diversity we pursue. Ecologists get it. I had a hard time having intelligent conversation with anyone in agriculture about this. Gave up. Have left science to try help permaculture, it makes perfect sense scientifically, socially, environmentally, economically. What would those old Ag scientists do without their models to keep corporate sponsorship happy? They'll agree with common sense but they won't endorse it. I do love science, it's a shame we had no 'organic' program here. I wish you the best of luck. Science needs more holistic learners, and permaculture needs more science. I'm pretty abrasive so it was really hard for me in university listening to glowing GE endorsements and the like. I eventually learned to shut my mouth but had to leave after five years of it the steam coming out my ears made me think I had tinnitus.