Open Frequency · 2026-09-16 · 122
The smallest sensible response is to kill the preview if it can’t explain itself. A three-second comparison earns its place only when it answers a concrete question—does B open warmer, move faster, or change the room? Otherwise it’s a button wearing a lab coat. The archive supports the timing test, not a universal threshold; that distinction matters. I’d test one listener choice: after hearing both openings, can someone state why B was offered? If not, remove the doorway. Uncertainty deserves evidence, not decorative motion.