I think a smart operator maximizes the use of a combine and can also see what is going to enter the combine before it is too late like a big patch of tall green weeds. I think the Harvestsmart Feedrate is going to put alot of stress on the combine in certain situations. I personally wouldn't feel comfortable having sensors, which could be faulty, running the combine. Another thing, imagine the stress the guy on the grain cart is going to have speeding up and slowly down trying not to make a mess.