All most all of us used knife for sometime for some purpose. Think about a new knife you purchased. How easily you can use it. After using it for sometime, its performance will go down. To get the same performance back. You have to sharpen it. Once you sharpen it, you will get the performance back as you bought first time.
This principle is applicable for all of us. We learned many thing during our journey from a kid to know, If we are not revising or sharpening what we learned, we cannot use ou

