4.6 Rapid Prototyping (fast validation)

I’m working on a project about [describe your domain/product/idea]. I want to use rapid prototyping to validate design ideas quickly. Can you help me with: 1. Suggesting methods/tools for rapid prototyping. 2. Explaining what fidelity level is “just enough” for testing. 3. Outlining a process to go from sketch → prototype in under 1 day. 4. Highlighting pitfalls to avoid when moving too fast. Format as a rapid prototyping playbook.