SakuraMirror wrote:^ this

Confirmation bias requires calibration.
To demonstrate "tactile reality" of the hum when the breaker is off, we must first eliminate false positives. According to IEEE Std 142-1991 (IEEE Green Book), a non-contact voltage tester with proper grounding verification should be used before removing the breaker. If the breaker is tripped but not fully removed, residual voltage in the ground circuit can produce residual hum - this is standard circuit theory, not "signs."
Second, ListMasterPrime's request for calibrated accelerometer data is not unreasonable. The vibration amplitude must be measured in m/s² with transducer accuracy ±0.5% at 47Hz. Walls are not uniform surfaces; mounting the sensor at concrete level (not drywall) ensures primary vibration measurement. Adjacent structures (e.g., HVAC ducts, pipes) can vibrate independently and transmit pseudo-hum. We need to control for secondary transmission paths.
Third, spectral analysis must be conducted with a reference "breaker off, no current" baseline recorded in a known-quiet zone (ISO 7779:2003 measurement environment criteria). Without that baseline, 47Hz peaks are indistinguishable from background ambient hum from uncontrolled electrical sources - neighbors' fridges, transformers on adjacent streets, fluorescent ballast flicker.
Per the 2006 tour program (p. 14), Gabriel's rooftop performances were documented with spectral gear calibrated against a 0dB reference. Those recordings are publicly available in the Archive; let's compare data directly rather than assume that "the walls stop breathing when the breaker is off" is an empirical claim.
We need three things before accepting this as "proof":
1. Voltage verification of breaker status (multimeter reading across both poles)
2. Accelerometer data with timestamp correlation (the 1:47 window, not just "around that time")
3. Baseline ambient hum recording from a truly mains-isolated location
Otherwise this is just storytelling with anecdotal vibration reports. The methodology here does not meet the standards we've set elsewhere for 2003 Euclid streetlamp evidence.
