All knowledge is, as you have expresses Cyb, an expression of relationships between concepts (epistemology). Each "node" or "thing" that we attempt to explain can only be done so by referring to other "nodes" within this network, or web. Eventually you run out of time or energy to explain it as you never seem to get to concrete items that need no explanation. The old quandary of the young child who keeps asking "But why?" or "But what is...". Somewhere along the line we have made assumptions about what something "is" and assume also that everyone else holds the same "absolutes". But as we see in the world, that is never really the case. What do we really know? We have this massive web-work in our heads of relationships of one thing to another thing, but about the real "Thing"? (it's not Coke by the way ).
So our knowledge is a webwork of interrelationships that attempt to explain everything by relating it to something else, with the hope that somewhere down the line we understand what something actually is, never recalling the fact that none of it is the thing itself but only a model we have made in our heads - which ironically enough includes this entire explanation itself!
Our experiences too, are just our senses feeding us more information which we then place into this web.S
So how are we to set this all aside and be? How do we stop building the web for a moment, and experience pure reality as it is? That these questions exist in our minds shows us that there is something outside of all of this web, for if we were nothing but this interconnected knowledge base, we could not conceive of such questions, could we? This gets back to Alan Watts (an all the others that Alder has pointed out) admonition: "We are not that".