Entropy in social groups:

In pseuorandom number generators the output sequence is limited by the seed. If you have insufficient entropy when picking the seed then you land in a narrow band of output sequences.

A homogenous group can quickly reach consensus and is efficient for a given set of tasks but has a very narrow set of possible states (ie. good luck innovating). This is low entropy.

A diverse group has a hard time reaching consensus and can be slow to make progress, but has a much greater capacity to explore outcomes. Higher entropy.

TL;DR - avoid echo chambers.