Does anybody know the concept of aiming high so you'll atleast get something good.
Sure. But it's not always the right concept for the issue at hand. If I demolish a building and excavate the land to place the foundation of a new high-rise that nobody wants, and the project gets blocked, the community doesn't "atleast get something good". The community loses an actual building and gains a bigass hole in the ground.
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My workplace has the concept of "stretch goals". We list out all the things we want to accomplish by the end of our current effort period (usually 3 months). Then we note that it's more things than we can probably accomplish. So we prioritize our commitments, and leave open the possibility that if we hit our goals with time and resources to spare, we can do some of the other stuff we wanted to do.
This is very effective. We don't usually get everything we asked for, but we always get a lot of good stuff in the process.
But this process involves actually taking the time to examine what we want, in detail. It involves actually understanding our available resources, making priorities, and setting measurable milestones to work towards. It involves knowing with some confidence what we're actually going to work on, in practical terms, and how much progress we realistically expect to make.
I'm not sure that "aiming high so you'll atleast get something good" actually works anywhere except sometimes in negotiations. And even then, I bet it only works when both parties have a concrete list of actual negotiable points, such that they can add and subtract points until they reach a mutual agreement.
When one party comes to the table with a clown car of vague notions, the proper negotiating response isn't "let's cut this list down to something more reasonable". The proper negotiating response is "let us know when you have something to negotiate".
Assuming that this is actually supposed to be a negotiation, and not a PR stunt. If it's supposed to be a PR stunt, then the operative concept is completely different.