Certainty of the Other’s existence arises from the cogito itself, not from inference

Evidence

Thus what for lack of a better term we called the cogito of the Other’s existence is merged with my own cogito. The cogito examined once again, must throw me outside it and onto the Other, just as it threw me outside upon the In-itself; and this must be done not by revealing to me an a priori structure of myself which would point toward an equally a priori Other but by disclosing to me the concrete, indubitable presence of a particular, concrete Other, just as it has already revealed to me my own incomparable, contingent but necessary, and concrete existence. Thus we must ask the For-itself to deliver to us the For-others; we must ask absolute immanence to throw us into absolute transcendence. In my own inmost depths I must find not reasons for believing that the Other exists but the Other himself as not being me. — Jean-Paul Sartre, Being and Nothingness, 710

Categorization

• XREF: Directly sets up the foundational backdrop for Beauvoir’s ethics — the other’s ‘not being me’ is the seed of her relational ethics in The Ethics of Ambiguity. — connects to: The Other’s existence is a contingent but unprovable necessity.; The cogito’s deepest meaning is to refer outside itself; The cogito’s self-apprehension is first a grasp of its own contingency. (+6 more)
• DEFINE: Establishes that the Other’s existence is grasped through the cogito as a concrete presence, not an a priori structure.

Broader Connections

• The Other’s existence is disclosed, not abstractly proven #corroborates (0.90)
• The Other’s existence is certain while the Other’s identity as this object never is. #expands (0.85)
• The Other’s presence resists phenomenological reduction and doubt #complicates (0.75)
• Analogical reasoning can operate as an intuitive particular-to-particular leap without a conscious rule #contradicts (0.70) — Frederick Schauer, Thinking Like a Lawyer, 183