Three Questions and I Know You- Really?

Can you search someone's soul by asking them three little questions?

Recently I played a game where I was asked three questions about three of my favorite things and then I was told to give three reasons why they were. At the end, the person claimed to know three personal things about me, and their details, and, frankly it seemed to work, why?

Okay, before you read on, you may be thinking this is childish play, and it was, it was just to make all of us laugh and I don't hold much on it, but this person did guess some personal truths about me. Maybe to make myself more clear I will answer the questions as I did to her.

1) What's your favorite color and three reasons why?
Green
a) It the color of the carpet in my house and I love being home.
b) It is my brother's favorite color and when I was little I wanted to be just like him.
c) It's the color of the grass and I love to lay in warm summer grass.
2) What's your favorite tree and three reasons why?
Blue Spruce
a) I love that it stands out, how many blue trees are there in the world?
b) It smells so dang good!
c) There is one in the park behind my house that I used to play in a lot when I was a little kid, and it was always so much fun!
3) What's your favorite body of water and three reasons why?
Pacific Ocean
a) I love Hawaii, and I loved going to the beach and swimming there.
b) I love to swim (play in the water)
c) It's warm, I love the feeling of warm water around me.

Okay, so it kind-a seems obvious why she would know some personal truths about me, because my reasoning was all personal. I gave her personal insight into myself. I let her know that I loved the smell of pine trees, and that warmth is a must for me, and that childhood memories are treasures for me. It says something about you in the way you answer questions because you answer them with your thoughts not just a regular response that can be taken too many different ways. Your thoughts on why you like things tells a lot about you.