okay, programmer is another example of mass production.
don't just be a programmer since most of the guys can do that.
Do something on a higher level that the others cannot.
That is the point.
No offence.The reason I don't think PM is a good job is from
my own experience. Maybe the PM you mentioned here is at a
high level. But to be a manager at a high level, no certificate
can help you. The work experience is more important. And it is
not easy for Chinese to be a PM here even at the entry level.