To skip the obvious meaning: if you learned something you would not
verbalize it.
A definite meaning of my first sentence is that anyone who says, I
learned from my mistake, obviously did NOT learn from their mistakes
because this statement assumes ignorance is a matter of isolated
pools, little bits that can be captured and swept up, even hoovered
up, by a stately intellect.
What if the intellect is not stately?
What if ignorance is not just a few lost pieces from a jigsaw puzzle.
How would we really KNOW what ignorance is? What if the shore is small, and the ocean of ignorance huge???