There are very few Caleb Tennis's. I know of one other, as I sometimes get emails meant for him...
I am an only child. My wife is 1 of 3. Even after 17 years of marriage, I do not understand sibling dynamics...
I've been incredibly tech minded since a very young age. I got my first computer, a Tandy TRS-80, at the age of 4. It came with a book on learning the BASIC programming language. I just started typing what I read.