When we say someone is ‘deep’ what are we really saying?
This colloquial nonsense is not really always nonsense actually, but half the time we say it in terms of what’s actually behind it, most certainly is.
We don’t really know half the time what we mean when we say something, we are usually actually just referring to a thing that we once knew had the answer. This is no different than how a computer system works: by means of a query. A query is often a server’s request made to a database to pull information, that is, a file or folder that matches a tag which is what the query is comprised of mostly.