Model: Bennett et al., PRL 70, 1895 (1993). The pair is a Werner state p|Φ+><Φ+| + (1-p)I/4, so Bob's corrected Bloch vector is p times the input and F = (1+p)/2. Outcomes are uniform (25% each). Spheres show single-qubit Bloch vectors; a dot instead of an arrow is a maximally mixed (entangled) qubit. Educational model only; no matter is transported.