Thank you. There was a lot to extensions that was bit of scope for the essay, which I would love to go deeper on in later writing.
Some open questions I had as I thought through extensions:
We talked about the data abstraction side: when you expose data, it's easier for end-users to build extensions. But there are questions on UIs and data modeling.
UIs:
How cool would it be agents could "enter" into applications and change the UI? In one sense this hard, but at least a demo feels in reach. What if an app exposed the UI components that it was built out of? This would let the agent remix them.
Data modeling:
Exposing data works, but what if users want to store extra information? Maybe each user could spin up their own separate "extra" database.
Interesting point.
I keep coming back to the idea that users could request changes, and they could be experimentally deployed immediately.