Knowledge is only useful if it can be immediately practically applied.
I have a simple grasp of the subject of alchemy: the philosopher who turns lead into gold. I understand the use of alchemical ideas of becoming a better person from the one before in Freemasonry. I can convert the ideas of alchemy into concrete terms of the acorn converting into an oak tree, just as lead becomes gold; that this same acorn draws from all the four basic elements (fire from the sun, carbon from the air, water from the rain, minerals from the earth) to become the oak tree.
I read a blog by an academic who teaches alchemy at a university. This academic is asked by his superiors to try and spin his subject into a manner that fits into a syllabus, and then he goes on to give an intellectualised set of lectures to meet that goal. Often academics and the education system heads off into intellectualism that is uninspiring and impractical. This brings me to practical wisdom, if something cannot be immediately practically applied it is useless knowledge. I wonder if any of those students are practically applying knowledge given to them by that academic? Knowing the modern Western education system, not many.