Wow! I didn't realize that this was such a famous question! I thought I was just lacking in Biblical knowledge and had to do some research.
I was reading your thread and thought that you were the perfect person to ask.
Four year olds pop these questions out all the time (i.e. why is the sky blue or what makes the clouds move). Thank you, you are very smart!
I am not smart, just well read!
if I was SMART, I wouldnt be unemployed!...(sigh)...