People blame gluten for everything from child behavior and learning problems to chronic pain and fatigue.

FORBES: Gluten-Free Diets: Miracle Or Hype?

Gas taxes or carbon prices intended to alter behavior only work by causing financial pain to force the demand response.

FORBES: $40B for Clean Energy at Just 12 Cents Per Gallon? Yeah, Why Not?!

But the point at which the public feels the pain (or thinks it will) in a way that might actually alter their behavior is precisely when such policies become political nightmares, as we just saw with the Senate cap and trade debate.

FORBES: $40B for Clean Energy at Just 12 Cents Per Gallon? Yeah, Why Not?!