I used to carry around a switchblade and flick it open and shut constantly during meetings. When I really hated what was said, I would slam the knife down, point first, into the coffee table or conference table in front of me. Pretty soon, people stopped giving me stupid notes. But it was an empty victory, because they also stopped having meetings with me, faxing me the notes instead. Since we were no longer in the same room together, the execs now felt free to be just as stupid as before.
Executives often have specific ideas on how to fix things.
It's the writer's job to come up with the good version. Even if the executive thinks his or her specific idea is good, it might not be. And it's still the writer's job to come up with something that fills the need but is better. If you execute every note you get and the script is bad because of it-it's still your bad script. The executive may admit that their note is part of why it's bad, but it's still a bad script, you're still the writer, and the project isn't going forward.