This is a variation of the Skeptic’s Gambit. While we lack absolute certainty, we possess the highest possible "confidence". The inference of other minds is the only model that provides a coherent, predictive, and functionally effective explanation for reality. To reject it for solipsism is to choose a functionally sterile and self-undermining path that fails the test of navigation. Note: For the full formal objection and detailed rebuttal, see Appendix J: Objections & Rebuttals.