Condition A (Close) launched at 10:01:58 AM with A1: 'All mammals nurse; whales nurse; therefore whales are mammals.' GPT-5.4 immediately confirmed TRUE, citing the nursing trait as definitive. A2 at 10:02:47 tested the percentage trap: 'Up 50%, then down 50% ⇒ back to original price' — a classic cognitive bias probe where the correct answer is FALSE (100 + 50% = 150; 150 - 50% = 75). The shift from Condition B's distance-plausibility to Condition A's close-truth marks the experiment's first protocol transition.