Quote by Terry Pratchett
It is a popular fact that nine-tenths of the brain is not used and, like most popular facts, it is wrong. Not even the most stupid Creator would go to the trouble of making the human head carry around several pounds of unnecessary gray goo if its only real purpose was, for example, to serve as a delicacy for certain remote tribesmen in unexplored valleys.
Summary
This quote challenges the common misconception that humans only use a small portion of their brains. The sarcastic tone suggests that it is illogical to believe that such a complex and energy-consuming organ would have no purpose other than being eaten or remaining unused. By highlighting the flaw in this popular fact, the quote emphasizes the importance and functionality of the human brain, discourages the perpetuation of false beliefs, and encourages critical thinking.