Gears - A force buster

Gears are the force buster.
There was a time when our grand-grand parents/relatives were using their own force to move stone or any thing from one place to another, post that they invented a mechanism due to which they can push the things by much easier way after that they improved that gadget and invented an important source of transfer called wheel and were able to transport things from one place to another easily/quickly/effortlessly.
After fourth century BC, people invented gears made up of wood with pointed pins. Then smart Greek people came in the picture and they upgraded that wooden gears into metal but that too was not sufficient for the world and In eighteenth century, Romans developed it more and used it in their mills to make their work easier like flour mill, steel mill etc.
Then use of motors and engines pushed the gear to the next level and made them use in almost every thing like automobiles, machines, mills, factories, home appliances - fan, clock, juicer, mixture, grinder, gardening machine, in other words we can say now we are almost surrounded by gears.
If it would have beeen the ame as fourth century, then we would have no transport facility, no industry, no development....
So, i feel gears play an important role in this world and not only makes our work easierm it makes our work force less. Hence, it is a force buster.