Every agent I use is building a model of me. Claude has learned how I like my prose. ChatGPT remembers what I’m working on. I don’t mind this—every person I have a relationship with carries a model of me in their head, and every company I do business with keeps a profile. Other people’s understandings of me have never been mine to control, after all.
But an agent occupies a different role. It learns my writing style, my preferences, and the shape of my work and life, all to help me with what I do. Yet if I switch products, I have to start over. If I use three agents, each rebuilds from scratch what the others already know. Everything an agent learns lives with its vendor.