Think of the one person in the world who is the most ideologically aligned with you.
On what percentage of issues that are important to you do they share your view?
I think that for most reasonable interpretations of Vitalik's question, graphs with <90% average agreement are graph-theoretically impossible with real-world levels of connectivity.
As the number of issues you care about approaches infinity, average max-agreement should asymptotically approach 50%.
I think this is the mathematical intuition behind what
hmm never thought about it this way, but I suspect this is a stronger statement than mine. It assumes a near-random universe with uncorrelated truth-ground landscape.
Yeah that's fair, but I think even given stronger correlations between opinions, max agreement decreases as dimensionality increases seems both true and close to the argument you were actually making.
The intuition is definitely the same for both ideas like you said.
Now I'm wondering what the minimum conditions for convergence would be... probably small group size, geographic immobility, and information monopoly.