I have often .... (what is the word for it, disrupted? enlightened?) communities highly focused on a single topic with a meta conversation about general topics. It is of course great to have [say] a physics community and talk about physics but also rather sad that such gathering of analytical people cant talk about other things that very much need their attention. It gets rather absurd where people who talk for many years and are deeply familiar with the others perspective inside the domain NEVER talk about anything outside of it. It is how these online gatherings function and why they work so well but it prevents building quality relationships in the time tested ancient way.

We are missing out on truly hilarious insights, when you present professionals from one discipline wiht topics from another. A biologist might judge the fitness of the economy by fertility and average life span.

Not sure what the solution to the riddle is but I suspect walled gardens are the problem. How to code a "bring your own community everywhere" I have no idea.