Seeking Out Information
Whenever new information comes to light, you can check your assumptions. Do they still seem valid? Which estimates depend on an assumption that no longer seems valid?
What sort of new information might affect the validity of your estimates? Almost anything, really.
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When someone leaves the team: What effect will that have on productivity?
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When someone joins the team: That’s likely to slow things down for a while. Will it speed up again later?
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When a library, tool, or operating system releases a new version: What effects will that have?
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When there’s a physical rearrangement of the workspace: What affordances are changed? How will it affect communication?
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When you find out that the codebase on which you’re building this ...
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