Quote Originally Posted by Hyfi View Post
People who are blind from birth have extraordinary hearing most times. That is why Double Blind Testing would be better done with Blind people. Nobody can be accurate by being blindfolded for a short time as opposed to normal hearing for life of a blind person because they are not used to it and each time blindfolded the hearing sense change can be a little different.

If they did cable swapping tests with blind for life testers, and they did not hear any changes ever, I may change my mind.
Blind in this case simply means not being able to see the equipment used prior to and during the test. It doesn't mean blindfolded.