I thought about fiber optics too. The thing is, the square cube law hits vertical farms(it's even worse when they only collect sunlight at their roof). There's

I thought about fiber optics too. The thing is, the square cube law hits vertical farms(it's even worse when they only collect sunlight at their roof). There's some wasted energy in standard farms (the spaces between plants) so I guess it's not as clear cut. But as soon as you start to stack layers it starts to become a problem.