First, please understand that Buddhism is a teaching for eliminating and controlling worries and suffering.
Then, ignorance (stupidity)
It can be thought of as a general form of foolishness that “interferes with losing or controlling worries and suffering.”
For example, laziness, carelessness, confusion, pride,
Also, not understanding suffering, impermanence, or selflessness, and substantively capturing the mind and body,
Misunderstanding that something that is changing hasn't changed,
Deciding on some kind of information from the beginning and doubting or blindly believing it,
Obsessing over meaningless superstitions and conventions,
Furthermore, my obsession with living as me, and even my obsession with being.
The general way of thinking (foolishness) that increases one's own worries and suffering is nonsense.
This is a “misunderstanding” that life is born with.
The misunderstanding of being stupid (ignorance) is like misunderstanding the shadow of a tree reflected on a shoji as a ghost,
Once you have enlightened and realized the truth, “Why was it a tree?”
Your insanity will go away, and you'll never look like a ghost again.
It is said that you “realized” that you woke up from a misunderstood dream.