Well... it depends on how we define "smart" and "intelligence". I have more book smarts in certain fields, such as the scientific process, and organic chemistry, and whatnot. But my father is a W-1 (Warrant Officer) on a Coast Guard Cutter, and he's the engineer, so he knows everything about those engines... so he's smarter than me in that regard, and my mother is a veterinary technician, and knows how to knock an animal out and perform surgery on it, so she's smarter in that regard, and they're BOTH smarter in the world sense by default, because they've had more experience... you really can't apply a blanket statement to people like "one's smarter than the other".