Por: Ing. Claudia Monreal Lopez, Ing. Dafne Herreros, Core Mining Studies, Chile.Geological Modeling introduces a dilution factor that affects between +-3% and +-20% of the tonnage exploited. The choice of modeling technique has a negative effect on the economic indicators of a project and a very strong impact on credibility, which seems more critical these days. In this work, we develop on how to incorporate technologies without losing credibility or information, and mainly to consciously incorporate technology that considers the local experience of the deposit, going through the effects of the express model and detecting them, also learning how to avoid them without losing speed and information.Geological modeling has been the core of this industry for so long that we lost sight of its importance. Developing faster and faster tools that have changed the market so many times that we lost focus on the main issue: to determine a well-informed geological boundary that allows us to define the volume and certainly tonnage.The Geological Modeling is the undisputed breakpoint of any type of mining method, the effect that the vision and experience of geologists is propagated throughout the development of the project, and it is an important part of the final success.