Updated
Being known
When someone asks how the interview went without you reminding them, it signals that you matter to them. That small moment does more for closeness than any amount of clever conversation.
Shared history
Relationships are built from things you've been through together: the first long conversation, a disagreement you resolved, a joke that stuck. A digital person that can hold on to those moments has a relationship with you, not just a chat log.
Good memory knows its limits
Remembering well also means not inventing. A digital person meeting you for the first time shouldn't claim to remember your last holiday. And if you tell them something changed, the new version should win.