"stop with all the pointless tribalism "

I'll challenge that, because I think tribalism (living in small groups) is the way more akin to our genes. And much from the rising mental problems of humans today comes from living on your own in a big anonymous pool of strangers.

But those small groups could then indeed work (more) together for the common good.

If we are looking at what's in are basic genes as a marker on what we should be doing, I don't think we should be messing about with fusion. Or fission come to think of it. I agree loneliness and mental health are big problems today however don't think the answer is having an adversary to motivate yourself.

"If we are looking at what's in are basic genes as a marker on what we should be doing, I don't think we should be messing about with fusion. "

Why?

I didn't say we should live stone age style. And using technology is very akin to our genes, afaik. So I don't see any problems with that. What matters more than the tools are the social interactions I believe. And there we could do better.

I'm not sure if the Earth is large enough to distribute 8 billion humans into sufficiently separated small groups, and such a scheme isn't even on the political horizon.

I didn't say there need to be a big space separation, nor clearly divided groups, just that the general people you interact with are in general familiar and not randomly strangers who change all the time. So a more tribal way of living in the cities is possible, I believe.

But .. actually there is also enough space on earth left ... poplated areas are very dense compared to big open lands.

The funny thing is that you're announcing you're part of the tribe that doesn't like tribalism.

I'd say it was more of an opinion rather than a tribal belief or following. I guess it depends of the definition of tribalism.

In short, I'd like humans to just get on with each other and treat the world we share with other species with greater respect. If that puts me in a tribe, then so be it!

Or, human might sorth their species out and away from the list of Earth species, effectively rendering question of nuclear fusion, graphene production, AI, and social constructs irrelevant.