Nobody ever demanded you unravel every mystery of the cosmos, or make sense of all you learn. There are things we will come to understand and things we will never fathom in our lifetimes—as well as things that are just beyond the gray matter within the human skull.
As humans, we are indignant about such limitations, as though the unknown has no right to stay unknown. As though reality is defined by our ability to know it.
It may be hard to concede, but none of us is G–d. Our job description is not to know all things.
Our job is only to pick up those truths we will each need for our mission while we are here.
In the Passover Haggadah ( para phrasing) that even when we are all learned we must learn again because there are points we might not have caught the last time around. Yes, human knowledge is limited and for a very good reason. Yet, we must continue learning to the best of our ability since H' endowed us with a brain to think. Great if we know our limits.