AI chat tools are powerful for brainstorming and refining ideas, but chat histories are poor at preserving meaningful work because they trap useful insights inside long streams of iterative back-and-forth that people rarely revisit. Relying too heavily on AI can reduce critical thinking and problem framing, especially when users skip the deliberate sketching and reflection that traditionally helped shape ideas. AI works best as a production tool after humans have already clarified the problem, structure, and intent themselves.