The strong scientific consensus that no magnitude 10.0 or greater earthquake will occur before 2027 stems from the absence of any such event in the global seismic record and the geophysical constraints on fault rupture length and energy release required to reach that threshold on the moment magnitude scale. The largest documented quake, Chile’s 9.5 in 1960, involved an exceptionally long subduction-zone segment; modern monitoring by the USGS and international networks shows no current conditions—such as accumulated strain or foreshock sequences—capable of producing comparable or larger rupture in the next eight months. Historical recurrence intervals for great earthquakes in high-risk zones span decades to centuries, making an immediate jump to 10.0 statistically remote. While an unforeseen, rapid cascade along a major plate boundary could theoretically alter the outcome, such a scenario remains outside observed tectonic behavior and current monitoring data.