One thought I had on this is: the hearing test measure at distinct frequencies like 500 Hz, 1000 Hz, 2000 Hz, 4000 Hz, 8000 Hz. But what will happen if FX-322, AUD1001 or whatever stuff are repairing in between frequencies like 510 Hz, 1100 Hz, 2500 Hz, 4300 Hz, 7900 Hz? So then you will have...