Most experts put their best thinking somewhere their customers have to remember to open. Typically, that is a course, a book, a PDF, or a separate app. Which is great when they are learning, but sucks when they are in the line of fire. A hard email lands. A meeting goes sideways. They have to decide what to do next. With the traditional course or app, they have to stop the work, log in, find the right resource, and try to carry it back to the problem in front of them. Most people do not do that. They ask ChatGPT. Or Claude. Or they make the call with whatever seems right at the time. The hub for knowledge work For a lot of people, ChatGPT or Claude is becoming the hub for knowledge work. Not just where they ask a question. Where they direct the work. The calendar, email, Docs, project-management tools, files, and task lists are still there. But they are moving into the background. Instead of going tool to tool just to move an idea forward, you tell the chat what needs to happen. Then connected systems can pull in the context, do the work, and bring the result back. What this changes for experts You cannot just deliver static resources customers have to remember to check out. Your method needs to be available inside the tools where they already work. A customer brings a real situation to the chat. Your expert app can bring the questions that matter, the framework that applies, the constraints they need to respect, and the next piece of work they need to create. The customer still has to make the decision and do the work. But your method can show up while that work is happening. That is very different from putting a chat box on top of a course library. Start with one real moment Do not start by asking what kind of app you should build. Ask where your customer keeps getting stuck, making the same decision, or needing your guidance when you are not in the room. Pick one of those moments first. Copy this into ChatGPT or Claude: I have a framework that helps [who I help] achieve [the result].