<ul data-eligibleForWebStory="true">Large Language Models (LLMs) excel at patterns but lack inherent sense of significance, leading to wide yet often shallow reasoning.Neuroscience reveals brain's 'neural avalanches' follow a power law, with small events common and large events rare, optimized for insights.Semantic Information Mathematics (SIM) aims to quantify coherence and significance of ideas through V, S, and E components with tunable weights.Proposed model combines brain's power law with SIM to create AI reasoning based on semantic gravity, overcoming mere probability.Introducing Semantic Mass as a measure of idea complexity, the model selects outputs based on Semantic Coherence and power-law filtered mass.Resulting AI prioritizes significant ideas, simulates 'aha' moments, and fosters creativity through its selection mechanism.This model could enhance LLMs by emphasizing significance over probability, enabling the discovery of profound and meaningful insights.Understanding semantic gravity offers a path for AI to transcend pattern-matching and engage with the weight and depth of human language.It represents a shift towards AI models that uncover rare, valuable ideas within human knowledge, going beyond mere echo chambers.