[smhost]

That's just conjecture. In order to have a unified world (e.g. the Chinese world), you need a minimum of common ground (facts, historical narrative, etc) that you can base your genuine differences on. Without this minimum of common ground, populations are just splitting into relativist camps where even the most basic facts can't be agreed on.

[esarbe]

> In order to have a unified world (e.g. the Chinese world), you need a minimum of common ground

I agree.

I doubt however that a tyrannical dictatorship is necessary to achieve that. There are plenty of examples where people have agreed on a common narrative without an oppressive regime.