Vertical farming, the best solution to support an ever growing population or just a scam?
IMHO it has a lot of potential but not being able to grow grains really is something that should be tackled sooner rather than later. But I could see this being used by self sustaining communities to provide lots of food while using very little space. And it's technically more environmentally friendly than just using vast stretches of land to produce the same amount of food.
I think it's a good way to grow specialty crops (berries etc), and a great idea in space limited countries (Singapore mentioned).
I also think the inputs are pretty big, but you can control things better.
I don't think it's the solution to our food issues, but I think it can be used to build robustness into our system and decrease chemical inputs (mostly)
Also it looks cool af which is a point not to be neglected.