The overwhelming scientific consensus, backed by centuries of empirical observation, satellite imagery, and global navigation systems, drives the near-certain market-implied odds against a flat Earth. This reflects entrenched cultural narratives shaped by educational institutions, mainstream media coverage, and pop culture depictions in films and documentaries that reinforce spherical Earth understanding as settled fact. Fringe flat Earth communities persist as online memes and social media echo chambers but lack any credible momentum or institutional support to shift trader sentiment. Realistic upset scenarios remain remote, hinging on an unprecedented, verifiable discovery contradicting established physics—an event without precedent in modern times that would need to overcome rigorous peer review and public scrutiny to meaningfully impact resolution.