Subject: Raw potatoes: Do they provide energy when eaten?

I recall hearing somewhere that the complex carbohydrates in raw potatoes are 
so long that if a raw potato is eaten the human body expends more energy 
digesting the potato than it gets back.  The process of cooking breaks down 
these chains to some extent and as such a body can get a net energy benefit 
from eating a cooked potato.

Is this true or am I off base?  I have searched the web but I cannot find an 
answer to this question.  Rest assured I am not asking this so I can go on a 
raw potato diet but rather to see if I've been misinformed.  Thanks...

Re: Raw potatoes: Do they provide energy when eaten?