Overwhelming scientific consensus on Earth's spherical shape drives the 97.5% implied probability for "No," backed by centuries of astronomical observations, satellite imagery, and physics principles that traders view as immutable. Recent cultural moments, such as viral flat-Earth debates in podcasts and social media clips, have failed to shift sentiment because they lack verifiable data and face consistent debunking from experts across disciplines. Historical precedents like space missions and global navigation systems reinforce the market's near-certainty, with no credible upcoming catalysts—such as new expeditions or paradigm-shifting discoveries—expected to alter the outcome. While entertainment narratives occasionally amplify fringe theories for engagement, realistic upset scenarios remain negligible absent extraordinary, evidence-based breakthroughs that contradict established measurements.