It cannot be philosophically demonstrated that things exist outside the perceivers mind and that the information gathered by the senses is an accurate picture of reality. A non-philosophical mind is never plagued with doubts about the reality of existence—it plays the game of life without questioning the senses. It is only the philosophical mind that is capable of doubting the senses and treating existence with skepticism. A philosophical mind is a rare entity. Majority of the people are non-philosophical—they plunge headlong into the game of living the life of laborers, farmers, soldiers, scientists, businessmen, politicians, etc., without being plagued with philosophical doubt. Philosophical doubt is a trait of the philosophical minds.