The aggregate system of simpler machines will still need to get the task done. It's still a hard problem, no matter how you slice it. Systems probably also are

The aggregate system of simpler machines will still need to get the task done. It's still a hard problem, no matter how you slice it. Systems probably also are less able to operate in human environments. But one big trend in robotics is simpler robots that can solve part of the problem. We don't have butler robots, or systems of robots that are as capable as butlers, but we do have roombas & scoobas.