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Machines increase productivity. Workers can can get more done in less time. This increases their value to their employers, which allows workers to command higher wages. It also means there is more output per hour spent working, which stimulates the economy. Further, some workers will be freed up to do more value-added work elsewhere, helping the economy grow even more. These principles apply as easily to large machines -- like bulldozers and road graders -- as they do to simple hand tools.

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18y ago

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