I would like that to be tested. Two cars on with and one without a sunroof, but from where the driver is sitting he cannot tell which is which. He then has to identify which is which over a series of drives. Then I would believe he really can detect which is which. Otherwise he could just be reacting in himself to the presence of the sunroof, where as the cars have in reality identical handling characteristics.
That makes me a failed objectivist part time audiophile