I remember fondly the advice of my first computer science instructor in the mid-80's: Becoming a great programmer is easy! Get a notebook. When you make a mi

I remember fondly the advice of my first computer science instructor in the mid-80's: Becoming a great programmer is easy! Get a notebook. When you make a mistake, write it down. Don't make that mistake again. It's simplistic, but it's resonated with me for 30+ years.