> if it helps, it seems to me that having a "Pepsi Challenge" is like having an "Orange Challenge" where the other contender is a lime.
One thing you might not be realizing is that many people have absolutely shot their palates with modern flavorings, sugar bombing, etc. (though these days, smoking at least is less of a thing). I too don't have trouble telling the difference between Coke and Pepsi (and have done it blind), but if you took away visual cues, I think you'd be surprised how many people would bilge even the orange/lime test.
One thing you might not be realizing is that many people have absolutely shot their palates with modern flavorings, sugar bombing, etc. (though these days, smoking at least is less of a thing). I too don't have trouble telling the difference between Coke and Pepsi (and have done it blind), but if you took away visual cues, I think you'd be surprised how many people would bilge even the orange/lime test.