Scientific consensus from centuries of observations, satellite imagery, and physics experiments has cemented trader confidence that Earth is not flat, pushing the "No" outcome to a 99% implied probability. This mirrors how pop culture treats flat-Earth claims as enduring memes rather than serious debate, with no credible recent developments—such as new expeditions or viral hoaxes—shifting the narrative. Historical precedents like ancient circumnavigations and modern space missions reinforce the market's near-certainty. Realistic upset scenarios remain negligible, as any reversal would demand rewriting established science, though ongoing social media fringe content could theoretically sustain minor speculation without altering the outcome.