"Deep meditation on the first five verses of the twelfth chapter will teach us the best way to handle controversial matters. In the heat of controversy, we often forget the real issue! Hence, Krishna reiterated the vital factor in verse 2. He does not beg the question nor evade it completely; discussion, argumentation and even controversy are good! Metaphysical "friction" is like mechanical friction - it generates both energy and heat. Energy is desirable and heat is undesirable. Wisdom in argument acts like radiator-water, enabling us to absorb energy and avoid heat!"