Technology and automation. We’re arguing over how the productivity from those are distributed.

Fully automated space communism has yet to provide automated self-repairing roads, agriculture equipment, etc. so not sure why we’d argue about that yet. The best it was able to produce was famine and the starvation of millions last century.

Humans will still be needed for agriculture production, but if enough people aren’t fed yet we’re able to produce enough food, you use taxes and benefits (EBT, SNAP, higher minimum wages) to fix the allocation issue.

This isn’t rocket science.