Imagine you have a special machine that can tell you how bumpy and rough something is. This machine is called a shock data logger.
When you want to find out how rough something is, you attach the shock data logger to it. The logger can feel and record all the bumps and vibrations that the thing experiences, just like how you feel and record when you go over a bumpy road while in a car.
For example, if you want to know how bumpy the road is for a delivery truck, you can attach the shock data logger to the inside of the truck and it will record all the bumps and shakes the truck experiences while driving. This machine can help people make improvements to things like the truck or the road, so that they can work better and more efficiently.
Just like how you can learn how to avoid the bumpy parts of a road when you're driving, people can use the information collected by the shock data logger to improve and make things better.