I think you can google the definition yourself. I will not deprive you of this wonderful opportunity. Yes, and different professors give a large number of different scientific definitions of what knowledge or ignorance is.

I don’t remember when and from whom I heard this thought, but it stuck in my head. I will share it with you:
“In the absence of knowledge, we speak of uncertainty, and in the presence of knowledge, we speak of risks. Faith makes up for the lack of knowledge.” In teaching business, trading, finance.