Sitting in a meeting. PM asks if we can go with the schedule management has agreed with the customer.
So, now what do you expect us to say? We can say no, but if it's already settled up the hierarchy levels, it will not have any effect.

Always say No to this.
Reason - you say "yes" to look like a good team member. But - if it fails horribly, it will be your fault, bc you agreed. It "buy in", so that you will feel you have to meet the deadline.
Say "No" - and tell them that if the delivery team is not part of the deadline setting process, then you cannot agree. Even if it is actually feasible, or possible.

Were you following @rutee07's advice? https://devrant.com/rants/2164673/...

@magicMirror Sure, 'No' is the only answer. But what's the deal of asking pointless questions.

The PM and I know each other, we're working together for more than 10 years. He knows the overall situation and and he's gotten so many No's from me for unrealistic requirements, he really can't expect another answer.

@ddephor Its a method to push blame. sometime works, sometime not...

Say no to it! Just accept this. Tell them how much time you need (in like, now that I know the scope of the project I can estimate it, however I don't think that timeframe will be sufficient). If you want to be a good employe, also tell them that you'll try your best but it doesn't seam reasonable and you'll might have to loose some features or simplify them.

Also, most important, send them a summary by mail. That way, they'll a) have something to give to their bosses to get more time and b) you fucking cover your ass by leaving a paper trail!