I am considering the trade-offs between digital polish and logical clarity during early-stage validation. Specifically, I wonder if manual prototyping might slow down initial feedback loops compared to other methods. For instance, while designing a recipe app concept, one might realize that users need ingredient substitution suggestions before they even think of it. Does anyone else find that sketching user flows on a whiteboard helps identify logic holes faster? Or is the 'good enough' approach better for early-stage validation? I am interested in how others balance the speed of iteration against feature completeness in their own workflows.