" whoever writes things down has the power. People in different disciplines such as test and dev think that PMs make all the decisions. Then when they switch over and they wonder how they got to make decisions, and it’s because whoever writes things down records history. The ways you write things down and what you write down define history. The power of the pen. "

― Gayle Laakmann McDowell , Cracking the PM Interview: How to Land a Product Manager Job in Technology