Tin Foil Hat Audio

As I read the discussions about questionable tweaks I often have to remind myself that just because I can’t hear it doesn’t mean it isn’t there. Just because there is no instrument capable of objectively quantifying a difference doesn’t mean it isn’t there. Just because there is no generally accepted physical mechanism to account for a difference doesn’t mean it isn’t there. 

I think I owe an apology to psychics, mediums, and witches among others. Maybe they also perceive things I just can’t. 

Is it shiny side in or out when making a tin foil hat? How many layers?