Notion AI lead @sarahmsachs explains why AI models have become 2–3x more capable in just a year, yet knowledge workers haven't seen the same productivity gains: "Every time a new model comes out, what is the capability overhang of AI? Where is AI super capable at doing things, but the process, the product, and the permissions don’t exist." "If you were to look at where we were a year ago with where AI models are, I would venture to say they’re two to three times, if not more, better. I don’t…