The words change meaning depending on the context they are said, heard, spoken, read or written. For example, the nearness, it could be a measure o a relationship like how close are you to your mother or child. It could also be a measure of your success or failure. You are as close to success as you are away from them (failure).
This could similarly be a yardstick of your goodness or badness; you are as close to them as away from them. Like a mirage, the closer you seem to get to something, away it gets.
The more you learn, the more you study and vice versa, the more the realization sets in that, how little you know and as much is to learn.
The more effort you put to do what you want to do or go where you want to go, farthest you go from where you want to go then why to put any effort at all, is the question that arises itself obviously.
The irony is, you will not and cannot stop even if you will, to do so, doing something or the other, means, putting efforts irrespective of the fact whether it takes you anywhere or not, because it will at least help you stay put, stopping you rolling back and losing the ground, where you are already at, at least, for sure, as you do not want to lose the ground as such and would like to stay put at least in all circumstances.
Let me ask you another question, what is your reference point?
You need not answer it to me, but yourself instead. Any answer you may provide is not universally true; it is true only in reference to something or somebody and will be relevant only in that particular context at that particular time.
The reference point moves with time as well as with every question asked and with the person who is asking the question.
Even then the answer is not warranted and or necessary and is, in fact, meaningless, till it raises another question, to be asked to, not me but yourself.
Any question asked is of no use till it raises another question.
You are not supposed to know the answers to all questions but you are supposed to question, and not take it for granted, as it appears and as things are put to you.
The question may be rhetorical but it should challenge you to question not seek an answer. Once you think you know the answers to everything you are virtually dead.
I am sure you are very much alive though and you want to be alive of course. If you think that way, ask yourself, are you alive really?. If you think you ask, what far and why?
So you think you have understood. The understanding, if you think you have of something or anything has a reference to what you think you know or the limit or depth of your knowledge or the amount of information you have about something or anything.
How much or whatever you know cannot be unlimited and has a limit. If your knowledge is limited then there is no way you can be sure of whatever you know or have learnt is therefore limited and so is your understanding.
Therefore your understanding can be referenced to the limit of your understanding. Whether you agree or disagree is again limited to the extent of your exposure, your understanding.
Nothing changes in fact. What changes is the context as we grow and learn, time takes a turn and we start to perceive the same from a different angle with the newly acquired understanding?
Context is the fifth dimension after length, width, height and time.