The wheel is an invention that touches us every day—
One that we take for granted,

One that we burden and abuse,

And one that keeps on giving even under heavy loads.
The wheel was invented somewhere between 3000 and 4000 BC. It has since made it into just about every item that shakes, rattles or rolls. The first wheels were thought to be made of stone; although durable, this made for a hard, bumpy ride. Wheels to follow where crafted from wood, then rubber and now rubber with a barrier of air to cushion our pampered derrieres.
The first wheels where used primarily for carts to haul early man’s goods, but as the cart became more complex, so did the use of the wheel; for example,
gears and pulleys
and
steering wheels.
It is hard to imagine a world without wheels.
Thank you, Cave Man Carl, for your contribution to society.