[mcrews]

What we are talking about is not 'truely placebo effect' (as frank stated)
here is an example:
I give frank lee, Darin and Carlos each a geo metro to drive. I tell Frank Lee and carlos their cars are exactly modded to achieve optimal mileage.
(for the sake of the test I have only increased the air pressure in Carlos tires to 48psi, frank lee & darin are at 32)
Frank is the placebo.

Darin knows that he has no alterations and just drives.
Frank Lee thinks he has a 'modded' car and subconsiously drives better.
Carlos gets better mileage because of the mode (and subconsoiusly drives better)

In the medical/pharma field, the placebo effect can be as high as 15% of the blind group can 'feel' a positive result of the sugar tablet.

What we experience is really a 'shadow' effect. or ghost effect. or guilt effect.

But I agree that it exists.