The near-certainty of no magnitude 10.0 or larger earthquake before 2027 stems from geophysical limits and historical seismic records maintained by agencies such as the USGS. No event of that size has ever been observed; the maximum recorded is 9.5, and the exponential increase in energy release required for a 10.0 exceeds the known capacity of Earth's tectonic faults under current stress regimes. With only months remaining until 2027, ongoing global monitoring shows no precursors or strain accumulation capable of producing such an outlier. While measurement revisions or an unprecedented rupture along a major subduction zone remain theoretically possible, these scenarios lack supporting data from seismic networks or paleoseismic studies and would require conditions far outside established tectonic models.