Iteration - the Natural of Development

Great products rarely come from a single stroke of genius. They come from iteration—a deliberate process of creating, expanding, narrowing, and refining ideas.

The classic, textbook diagram above illustrates this as cycles of divergence and convergence. At first, the goal is to generate as many ideas as possible—sketches, concepts, approaches. This is the divergence phase, where creativity flows without judgment. Then comes the convergence phase, where ideas are tested, compared, and pared down to the few that have the most potential.

That cycle repeats. Each loop narrows the focus, moving from rough ideas to tested prototypes and ultimately to viable products. Divergence fuels creativity and ensures bold thinking. Convergence grounds the work in feasibility, user needs, and manufacturability.

Over time, the wide funnel of possibilities is refined into a clear, actionable design. That balance—opening the door to possibility, then methodically closing in on what works—is how Accerra Design & Engineering guides ideas from sketch to solution.

This is a classic, textbook illustration of the development process - periods of divergent concept expansion, followed by pruning and focusing. Each iteration narrowing toward the final concept.