
Pie in the sky
Unrealistic Optimism
Refers to expectations that are highly unlikely, often ignoring practicalities or realities of a situation.

He's dreaming of a promotion without any work experience—total pie in the sky.
Overly Idealistic
Indicates that someone is naively hopeful, not considering the likelihood of success.

Her idea of free cars for everyone is a nice thought, but pie in the sky.
Disappointment Potential
Can imply that the belief in such a plan may lead to disappointment when it doesn't happen.

They planned to win the lottery for their retirement fund—just a pie in the sky idea.
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