The real world has friction
An interface can look perfect and still fail because of lighting, connectivity, ergonomics, maintenance, or human habits. When a project touches the physical world, those conditions become part of the product.
Hardware forces earlier validation, better observation, and design for failure. That discipline remains useful even when the final result is entirely digital.
Innovation à la carte
The right combination might include an agent, an integration, a 3D-printed part, and a new operating flow. The goal is not to add technology; it is to build the smallest system capable of solving the problem.