Aquaponics can allow 400% of our population to live on this planet with a smaller need of land than our current society has . as for economics the best thing is to abandon the monetary system that leads to oligarchy and ibstead place a resource based economy

Communism is different to a fully automated world

It’s not rocket science . the basic income is a good start but it being permanent  guarantees a permanent class separation and the inability to pursue personal needs .therefore either you go full on classless resource based economy or you end up with high tech feudarchy