Farmers are the original pioneers of "renewable energy." Their main energy source is sunshine, converted directly to foodstuffs by some amazing works of generic engineering (a.k.a. "plants). Biofuels? Yeah, they've been burning corn and vegetable oils for decades. Robots? How about biological labor aids -- horses, herding dogs, chickens, etc.
Regardless, there's a reason you seldom hear "comfortable" and "subsistence farming" in the same sentence. Growing enough food to feed yourself is a full-time job, even with modern agricultural tech. Yeah, there could be a singularity-style event that makes traditional farming obsolete, but RepRaps and Roombas ain't it.
Regardless, there's a reason you seldom hear "comfortable" and "subsistence farming" in the same sentence. Growing enough food to feed yourself is a full-time job, even with modern agricultural tech. Yeah, there could be a singularity-style event that makes traditional farming obsolete, but RepRaps and Roombas ain't it.