It's great to disagree & commit if the person on the other side of the table can explain his/her position in a organized manner.
Unfortunately the proposal can be a fait accompli. I used to have demoralizing arguments with my boss, a company VP, about his product directives that were blatantly unsupported by logic or data. In every case his response would be to shrug his shoulders and say "but it's a done deal". (Meaning his CEO wanted to do it.) I can look back & say with confidence that each change was a financial dud.
Go ahead & say that it's your option to leave the company in these situations. It's true - and not always a viable option.
Unfortunately the proposal can be a fait accompli. I used to have demoralizing arguments with my boss, a company VP, about his product directives that were blatantly unsupported by logic or data. In every case his response would be to shrug his shoulders and say "but it's a done deal". (Meaning his CEO wanted to do it.) I can look back & say with confidence that each change was a financial dud.
Go ahead & say that it's your option to leave the company in these situations. It's true - and not always a viable option.