Faith v Evidnece

One of the more subtle themes in the Gita is the contrast between faith and evidence -- and humanity's inclination to want to "see" something in order to believe it. Indeed, one of the central tenants of Buddhism is that we must believe what we see -- and spend our lives trying to see as clearly as possible. But Arjuna keeps asking for evidence, or practicalities of how to achieve yoga and meditation, and Krishna finally offers him the sight of him in his most powerful form. Why Krishna doesn't demand total faith is an interesting tension in the Gita, and one that requires careful attention.