In good faith discussions, where you and your discussion partners are actually trying to understand each other, it's better to explain
In good faith discussions, where you and your discussion partners are actually trying to understand each other, it's better to explain
Only if you lie about your objection. Otherwise, maybe it can get overcome and you can engage in a win-win transaction. That is, it's not in red, it costs too much and it's not available delivered Thursday are all problems that may be solveable.
Now, if you invent a problem for something you aren't interested in at all, that's an issue.
I.e. if you give the actual date you need something they may say they talked to a friend in logistics and they have it on good authority that it really should be here by then. Getting their offer with no indication of your requirements means any misrepresentations aren't tuned to your specific requirements.
The irony is delicious here xD