On a cool summer evening, Jim took a casual hike in the deserts of Nevada and came across an interesting-looking stone. It was about the size of a walnut and full of color.
Jim's brain immediately kicked in his five senses — It LOOKS very colorful, it SMELLS like normal dirt, it TASTES a little salty (yuk), it FEELS oddly light for its size, he shook it and HEARD a soft rattle. Jim's brain, having used its entire set of five senses to check it out, identified it as potentially valuable.
So Jim's brain classified it as desirable and created a need to add it to his coveted rock collection. The brain then sent a command to his hand to slip it into his pocket.
Meanwhile Jim's six sense was screaming, "NOOOOO!
The brain is lying to us! Drop the rock and run!"
Unfortunately, Jim couldn’t “hear” the frantic warning because he doesn’t know that he has a sixth sense, much less understand it. It wasn’t taught to him in school. It isn’t spoken about by the medical community. It sounds a little woo-woo crazy anyway – a sixth sense? Come on, it doesn’t exist.
So as usual, Jim's brain doesn’t recognize the insistent cautioning.
So the coveted rock bounced around in his pocket for the rest of the hike.
Later that evening when Jim returned home, he noticed that there was a red patch on his skin around the area where the rock was in his pocket. It didn’t hurt, strange. He also realize that his energy levels have dropped and was feeling a little hot and clammy. Immediately brain went back to its tried and true five senses: I SEE my skin has changed color and I FEEL warm and a little sick. Aha, it’s the rock! There must be something wrong about the rock!
Disheartened and frustrated, the sixth sense demurringly said, “Derr, genius.”