We need to know what we KNOW

So many of us in today's world think we know things that we do not know. What does to know even mean?
There are two schools of thought:
One is western which says that it is educational based, I know it because I heard it, memorized it, taught it or can talk about it.
The other is eastern which says that it is birthed out of an experience. I know this because I have experienced it first and therefore I know this to be true.
What do you know?
How do you know you know it?
We have to be very careful because it is very easy to live a deceived life, a life lived in such a way as to where I think that I know something that I do not or that I am something that I am not.