[Planning] How do you estimate timelines when there is uncertainty?

Instruction: Answer this as a PM who knows how to estimate responsibly when the work still contains uncertainty and moving parts.

Context: Assesses whether the candidate can talk about schedule estimation honestly without sounding vague or evasive.

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When there is uncertainty, I try to estimate in layers instead of pretending there is one exact date the project can fully trust. I want to understand which parts of the work are better known, which parts are still assumption-heavy, and where dependencies or decisions could change the path.

I usually make those...

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