Practical Balancing of Rotating Machinery

In the beginning
There were no machines, life was simple; but work was hard!
Given a basic premise that humanity was created with the unique desire and ability to change the world, machines and processes were needed. People's desire to make work easier brought forth ideas, converted those ideas into hardware and the software (or instructions) that made the device useful. For every device there has to be instruction on how to use it effectively. Hardware and software have always been equally important, but not always equally respected.
The early development of machines is not well documented and perhaps took the following course to bring us to present day requirements.
'Life was simple; but work was hard!'
The first manufactured machine may have been a flint knife. In this case a non-manufactured machine (the knapping stone) was a prerequisite and the instructions for duplicating the knife were also vital. The learning curve would be long and teaching would have been a 'one-on-one' situation. With knives or spears in hand the first engineers had to develop programming with a 'Graphic User Interface (GUI)' to coordinate a group operation and the first cave wall pictures of how to hunt soon followed.

Such technological development led to continuous improvements in everybody's lifestyle. The pace of development really got moving once a critical stage was reached the chair was invented.

You may not have considered how important this development would be, but once a person...