[TeMPOraL]

IMO in terms of technological advancement, the primary difference between (theoretical) communism and (theoretical) capitalism is that the former lacks a strong forcing function. One has to admit that market pressures are a tremendous incentive to develop new technologies. But it's also totally misaligned with what's important. I feel a communist-tech society might develop slower, but in more meaningful ways.

[flyinglizard]

It's hard to direct and regulate the use of technology. The barrier is getting to first breakthroughs, once it's available then it spreads and adapted. E.g. military technologies getting into the civilian markets, or faster computer chips getting into medical devices (surely a market too small to be targeted by Intel, NVIDIA and others).