Knowledge is everywhere. Knowledge is information, and it can be gathered from literally anywhere. This information, this knowledge, can be obtained anywhere you look at, or use any other sense. That’s why it’s said that observation is a way to get information by the use of the senses and sometimes (introspection, or some sort), the use of out own minds.
So, being knowledge everywhere, could it be important to understand how it works? where does it come from? Obviously the answer is yes.