Spend enough time around living things and you notice that they are careful about who they let in.
I have spent the better part of a decade among cells, and somewhere in there biology became the place I go to think. So when I try to reason about something as bloodless as a network, I find myself reaching, almost helplessly, for the way life already does it. And the first thing life will tell you is that there are no truly open networks inside a body. Anywhere a thing could do you harm, something has quietly built a gate.
Consider a few of them. A grain of pollen does not fit just any flower. It finds its match the way a key finds the one lock it was cut for, and nothing else will turn. A plain bacterium keeps a small archive it calls CRISPR, a row of remembered enemies filed inside its own genome, so that the next time an old attacker arrives it is recognized and cut in two. A stand of aspen that looks like a whole forest is often a single creature, one enormous root sharing one life. And a field of identical, unguarded, endlessly connected plants, which we call a monoculture, is not a triumph of networking. It is the thing a plague prays for.
Life is not open by default. Trust, inside a body, is earned, kept small, and taken back the moment it sours. We have a name for the part of us that does this work. We call it the immune system, and we do not think of it as unfriendly.
Software went the other way, often for good reasons. We made openness a virtue in itself, and diffusion a kind of generosity. Sometimes it is exactly that. But I have watched open work behave less like a gift placed in a friend’s hands and more like something poured into a river. It goes everywhere. You lose sight of it. You never learn what it ended up feeding.
I should say plainly that I am not against markets, or sharing, or strangers. I am against the quiet assumption that the most connected arrangement, held together by the least trust, is automatically the most advanced one.
What we seem to be drifting toward looks older than the internet. Something like clans. You can properly trust the people close to you, the ones you have a little at stake with, where a broken promise costs you some of your standing. You share a few real values with them. And you meet the other clans on purpose, at the edge, one body greeting another, rather than dissolving everyone into a single warm undifferentiated soup.
This is why, when I build a community or the tools that sit beneath one, I want trust to be a real feature of the structure and not a thing we hope for afterward. A vouch that carries weight. A tie that means something precisely because it was not free.
I know how this goes wrong. A gate hardens into a wall. A clan becomes a way to keep people out and feel righteous about it. I am not arguing for that, and I will not pretend the line is thick. But a membrane was never built to keep everything out. It was built to be alive, and choosy, and open to exactly the right things. Nature worked that out a very long time ago. We might do worse than to listen.