The Value Index Mental Model emphasizes focusing on the intrinsic value of things—particularly those undervalued due to their uniqueness, scarcity, and broad service potential, yet possessing immense exponential growth potential. Originating from value analysis, initially defined as "function index / cost index," it aims to optimize the relationship between product functionality and cost. This model encourages individuals to not only identify the true value index of things but also concentrate on values poised for exponential growth, thereby achieving sustainable development for oneself or an entity while solving problems.