I used to think that personality was directly a product of one's experiences. Despite the fact that I took a biology course in high school, not once did the role of genetics in determining personality come up! Although the book clearly states that the role of genetics in personality is indirect, it is fascinating to me to think that my extroverted-ness or openness to new experiences is somehow related to my parents having those same tendencies. It's also a relief, seeing as i'm sure i will one day be a parent, knowing that babies come into this world with a predisposition to certain personality traits, meaning you can't screw your kids up too much! Also, I have always been a firm believer in the myths about birth order and having a "first born" vs. "second born" personality because I see a lot of those stereotypical tendencies in my sister and I. But the book has convinced me that it isn't true!