[louhong]

This is very misleading - his Quora answer (below) means that been involved (if at a limited capacity) with coding since he was very young.

"Depends what you mean by coding. I've been programming here and there since I was in middle school. In high school I was excused from my foreign language requirement so I could take more computer science classes. The first real class I took was in Pascal, and then later in c++. Independently I started playing with MySQL and PHP, but never did anything significant.

My freshman year at Stanford I took CS106X which was the first year's worth of CS in 1 quarter (it's usually two). I wouldn't say I did so well... I looked around and saw so many fantastically smart folks in that class and decided I was better off majoring in something like business. Looking back I wish I had stuck with it. It turns out that no undergrad class prepares you to start a startup -- you learn most of it as you do it."

Source: http://www.businessinsider.com/meet-kevin-systrom-a-qa-the-2...