Back then, I was still optimistic about the role of tech, and that more tech will solve things like this.
It was also before I really deep dived into permaculture design, and many of the related ideas.
What I came to realize is that we already have the solution for many of our food scarcity issues in permaculture design, and have been for long time. And that more tech in this adds bunch of unnecessary, fragile, non-regenerative, non-self-healing technology.
With permaculture design, most of the efforts goes into the design, but the technological palette is no-tech to low-tech. There is capital, but it’s largely going into design and can be deployed by humans with hand tools.
Take vertical farming. One of the key ideas in vertical farming that maps to permaculture design is the use of canopy layers, understanding that plants compete for light, and not root space. Different species of plants will live at different canopy layers. As such, you can construct a perennial plant “guild” which occupies all the ecological functions, at different canopy layers, that also yields something useful for humans.
You don’t need to maximize yields; and instead, when designed well, get something that is resilient against environmental changes while also restoring soil health. The indoor vertical farming using hydroponics doesn’t give us that.