well...
from what I remember of him
he said your going to hear the person say this..
then played it at full, half and quarter speeds....
did you hear it, here, let me play it slower...
do you hear it... let me play it slower..
as he did that he always said what he heard, so you would hear it..
impo, it was subjective and suggestive, and made your mind hear what he wanted you to hear..