来自一位前豆瓣产品经理的改编歌词：
How many roads must a PM walk down
Before they call him a PM
How many PRD must a PM done
Before he sleeps in the bed
How many times must the requirements be changed
Before they’re forever banned
The answer, my friend, is blowing in the wind
The answer is blowing in the wind
The answer, is blowing in the wind
原歌曲来自 Blowing In The Wind – Bob Dylan