Define the same useful service and identify each scenario version. Keep the complete assembly and all required components visible.
,Populate only sourced quantities and applicable factors or user-entered costs. Unknown data produces a partial/readiness result, not a zero value.
,Record practical trade-offs, uncertainty and decision rationale. Only compatible methods, units, boundaries and periods can support a like-for-like numerical comparison.
The scenario comparison draft will organise your answers, including your project, record or worksheet reference and responsible recorder and record date. It will identify missing entries; completion does not independently verify the stated claim or outcome.
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