Overwhelming scientific consensus and centuries of empirical evidence drive the near-certain trader sentiment favoring a round Earth at 99.3% implied probability. Satellite imagery, gravitational measurements, navigational systems like GPS, and consistent observations from global expeditions have long established the planet's spherical shape, creating a dominant narrative that leaves little room for alternative claims. Cultural discussions around flat-Earth ideas often surface in online communities or entertainment as fringe theories or satirical content, yet these rarely shift the market because they lack verifiable support. Realistic upset scenarios remain minimal, such as an unprecedented discovery rewriting fundamental physics, though historical precedent and ongoing data collection make such a reversal extraordinarily unlikely before market resolution.