Because the device does the work you would be doing, causing you to be lethargic.
labor saving devices - these devices reduces the need for manual labor, n reduces the of time spent doing task
washing machine
Agricultural Revolution
Agricultural
When labor saving devices were introduced housewives had options that made housework easier. Food lasted longer because refrigerator storage was more reliable.
the answer is women.
Hm almost common everyday devices such as a forklift that cuts the labor in weight, the wheel, a wheel barrow, a lawn mover, a pulley system.
Vacuums, Ipods, Cars, Television, Washing machines
labor-saving devices
They work in many different ways to save you labour.
it saves time,energy,and redues fatigue in humans
They save labour! It's much quicker and easier to put laundry through a washing machine than to do it by hand, for example.