Allow me to dispense with diplomacy, Paperw8, long enough to note that you came on this thread proclaiming that:
"you are dealing with expectations: a person who is willing to go out and get a power cord is someone who is seeking a better audio experience; so they are starting out *hoping* that the power cord will make their system sound better. this is aided by visually appealing packaging: expensive-looking packaging, impressive-looking cord thicknesses/end connectors and aesthetically appealing cord sheathing.
you are dealing with personal biases: a person who has already spend a few hundred (if not thousand) dollars on a power cord has a need to feel that he hasn't wasted his money. so, of course such a person will tell you that the power cord made an "immense" difference in his system, even if he can't tell you why."
But when challenged to respond to evidence of actual audiophile behavior not fitting these assertions, you retreated to:
"you're effectively asking me to tell you what is going on in your head, and i can't do that."
Does this contradiction just represent carelessness on your part, or does it show disingenuousness? Because your posts are rapidly becoming more purely argumentative as you go on here. I'm forced to conclude that I was mistaken to take you at face value in this debate: I think you're basically trolling. Little wonder that Agon has withheld some of your forum input in the past.