In Chapter 9 of 13 of his 2010 Capture Your Flag interview with host Erik Michielsen, executive and private life coach Garren Katz defines sound advice as a guess. He compares proving sound advice to logical guessing, i.e. planning. Uncertainty rules. To counter uncertain outcomes, Katz focuses on the process, investing emotionally in the experience with another to provide as relevant as possible given the circumstance.